Chuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học. Chuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học. .Chuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học. .Chuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học. .Chuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học. .Chuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học. Chuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học. Chuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học. .Chuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học. .Chuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học. .Chuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học. .Chuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học. ..vChuyên đề word forms Có đáp án. Lý thuyết và bài tập loại từ trong tiếng Anh, dùng cho cả tiểu học, THCS và THPT, từ lớp 1, 2, 3, 4, ,5, 6, 7, 8, 9, 10, 11, 12 và luyện thi đại học.
CHUYÊN ĐỀ WORD FORM ( LÝ THUYẾT VÀ BÀI TẬP) – CÓ ĐÁP ÁN A CÁCH CẤU TẠO CỦA TỪ I Cách cấu tạo danh từ STT Quy tắc V + ment → N V + ance → N V + ion/ation → N V + age → N V + al → N V + ing → N V + er ^ N V + or N V + ress → N 10 V + ant → N 11 V + ee → N 12 13 14 15 16 V + ledge → N V + ist → N V + ar → N V + ence → N Adj + ness → N 17 Adj + ity → N 18 19 20 21 22 23 Adj + y → N Adj + ty → N Adj + age → N Adj + cy → N Adj + dom → N Adj + ism → N N1 + ism → N2 Adj + th → N 24 Ví dụ develop (v) + ment = development (n): phát triển entertain (v) + ment = entertainment (n): giải trí attend (v) + ance = attendance (n): tham dự perform (v) + ance = performance (n): thực hiện, biểu diễn invent (v) + ion = invention (n): phát minh inform (v) + ion = information (n): thông tin marry (v) + age = marriage (n): hôn nhân carry (v) + age = carriage (n): chuyên chở hàng hoá, xe ngựa survive (v) + al = survival (n): sống sót arrive (v) + al = arrival (n): đến, tới teach (v) + ing = teaching (n): công việc dạy học train (v) + ing = training (n): công việc đào tạo work (v) + er = worker (n): công nhân employ (v) + er = employer (n): ông chủ act (v) + or = actor (n): diễn viên act (v) + ress = actress (n): nữ diễn viên wait (v) + ress = waitress (n): nữ bồi bàn assist (v) + ant = assistant (n): trợ lí depend (v) + ant = dependant (n): người phụ thuộc employ (v)+ ee = employee (n): công nhân interview (v) + ee = interviewee (n): người vấn know (v) + ledge = knowledge (n): hiểu biết, kiến thức type (v) + ist = typist (n): người đánh máy lie (v) + ar = liar (n): kẻ nói dối depend (v) + ence = dependence (n): phụ thuộc rich (a) + ness = richness (n): giàu có polite (a) + ness = politeness (n): lịch able (a) + ity = ability (n): khả năng, lực responsible (a) + ity = responsibility (n): trách nhiệm honest (a) + y = honesty (n): thật certain (a) + ty = certainty (n): chắn short (a) + age = shortage (n): thiếu hụt proficient (a) + cy = proficiency (n): giỏi, thành thạo free (a) + doom = freedom (n): tự social (a) + ism = socialism (n): chủ nghĩa xã hội terror (n) + ism = terrorism (n): chủ nghĩa khủng bố warm (a) + th = warmth (n): ấm áp, niềm nở wide (a) + th = width (n): bề rộng, bề ngang 25 N1 + hood → N2 26 N1 + ship → N2 II Cách cấu tạo động từ STT Quy tắc Adj + en → V En + Adj → V N + en → V Adj + ise/ize → V N + fy → V III Cách cấu tạo tính từ STT Quy tắc N + ly → Adj N + ful → Adj N + less → Adj N + ic → Adj N + able → Adj N + ous → Adj N + some → Adj N + al → Adj N + ing/ed → Adj 10 N + ern = Adj 11 N + y = Adj 12 13 14 N + ible = Adj V + ent → Adj V + ive → Adj N + ive → Adj 15 N + like → Adj child (n) + hood = childhood (n): thời thơ ấu neighbor (n) + hood = neighborhood (n): vùng lân cận friend (n) + ship = friendship (n): tình bạn member (n) + ship = membership (n): tư cách hội viên, số hội viên Ví dụ wide (a) + en = widen (v): mở rộng short (a) + en = shorten (v): thu ngắn, rút ngắn en + rich (a) = enrich (v): làm giàu en + large (a) = enlarge (v): tăng lên, phóng to length (n) + en = lengthen (v): làm dài ra, kéo dài social (a) + ise/ize = socialize (v): xã hội hố, hồ nhập industrial (a) + ise/ize = industrialize (v): cơng nghiệp hố beauty (n) + fy = beautify (v): làm đẹp Ví dụ friend (n) + ly = friendly (adj): thân thiện love (n) + ly = lovely (a): đáng yêu care (n) + ful = careful (a): cẩn thận success (n) + ful = successful (a): thành công home (n) + less = homeless (a): vô gia cư hope (n) + less = hopeless (a): vô vọng economy (n) + ic = economic (a): thuộc kinh tế history (n) + ic = historic (a): có tính chất lịch sử reason (n) + able = reasonable (a): có lí, hợp lí comfort (n) + able = comfortable (a): thoải mái danger (n) + ous = dangerous (a): nguy hiểm industry (n) + ous = industrious (a): chăm trouble (n) + some = troublesome (a): gây rắc rối, khó chịu hand (n) + some = handsome (a): đẹp trai nation (n) + al = national (a): thuộc quốc gia nature (n) + al = natural (a): thuộc tự nhiên interest (n) + ing/ed = interesting /interested (a): thú vị/thích thú bore (n) + ing/ed = boring/ bored (a): tẻ nhạt/buồn chán west (n) + ern = western (a): phía tây, phía tây south (n) + ern = southern (a): phía nam, phía nam rain (n) + y = rainy (a): có mưa sun (n) + y = sunny (a): có nhiều ánh nắng response (n) + ible = responsible (a): có trách nhiệm depend (v) + ent = dependent (a): phụ thuộc impress (v) + ive = impressive (a): ấn tượng invent (v) + ive = inventive (a): có tài phát minh, có óc sáng tạo expense (n) + ive = expensive (a):.đắt child (n) + like = childlike (a): trẻ con, ngây thơ, thật 16 N + ish → Adj IV Cách cấu tạo trạng từ STT Quy tắc Adj + ly → Adv god (n) + like = godlike (n): thần, thánh fool (n) + ish = foolish (a): dại dột, ngu xuẩn self (n) + ish = selfish (a): ích kỉ Ví dụ slow (a) + ly = slowly (adv): cách chậm chạp rapid (a) + ly = rapidly (adv): cách nhanh chóng * Lưu ý: STT Quy tắc N + ly → Adj Adj+ ly → Adv V + al = N N + al = Adj V + ing = N N + ing= Adj Adj + y = N N + y = Adj Ví dụ like + ly = likely (a) quick + ly = quickly (adv) arrive + al = arrival (n) nation + al = national (a) teach + ing = teaching (n) bore + ing = boring (a) honest + y = honesty (n) wind + y = windy (a) - Fast vừa tính từ vừa trạng từ Do đó, khơng có dạng "fastly" - Hard (chăm chỉ, vất vả, cực nhọc) vừa tính từ, vừa trạng từ + Hardly mang nghĩa khi, không không mang nghĩa chăm chỉ, vất vả - Trạng từ tính từ "good" từ "well" Do đó, khơng có dạng "goodly" Vị trí từ loại cấu trúc câu Noun = N ( Danh từ ) - Sau Adj + N - Sau giới từ ( in, on from, at , with ) + N - Sau tính từ sở hữu ( my/ your/ their/ his / her ) + N - a / an + adj + N - The + N - This / That + Nit - These / Those + Ns - One of ……+ N số nhiều - Trước V làm chủ từ câu - Sau enough (enough + N) Verb = V ( Động từ ) - S + V ( chia theo ) Adj ( Tính từ ) - Trước N - Sau be / look / feel / seem / make / become / find/ get / keep - Sau Trạng từ - Sau too (be + too + adj) - Trước enough (be + adj + enough) - Trong cấu trúc: be + so + adj + that - A, an, the, this, that, his, her, their, my, + (Adj) + Noun Trong câu cảm thán: - How + adj + S + V! - What + (a/an) + adj + N! Adv ( Trạng từ ) - Sau Vthường ( S + V thường + Adv) - Trước Adj - Adv, S + V (Đầu câu trước dẩu phẩy) - Be + adv + V3 / Ved - S + trợ động từ + adv + V ✓ Xem phía sau khoảng trống N ta dùng Adj ✓ Be + adj ✓ V thường + Adv ✓ Áp dụng tiếp trường hợp lại PRACTICE EXERCISES Exercise 1: Mark the letter A, B, c or D on your answer sheet to indicate the correct answer to each of the following questions Faraday made many in the field of physics and chemistry A discover B discoveries C discovered D discovering Faraday was an in Davy's laboratory A assistance B assist C assistant D assisted The generator is one of Faraday's most important A achievements B achievement C achieve D achieving His of the generator is very famous A invent B inventive C invention D inventor We will our English vocabulary if we read English books every day A rich B richness C enrich D richly You study very well It's that you will fail the exam A possible B impossible C possibility D impossibility Lan always shares her with me A sadness B sad C sadly D unsad These children have the to imitate animals' voice A able B ability C disable D disability Money doesn't bring to man A happy B happiness C happily D unhappy 10 Good students aren't intelligent students A necessary B necessity C necessarily D unnecessary Exercise 2: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions I don't believe what he has just said It is A reason B unreasonable C reasonably D reasoning The teacher does everything in order to her students A courage B encourage C encouragement D encouraged What is his ? Is he American or English? A national B nationality C nationalize D international You should spend your free time A useful B useless C usefully D uselessly Please decide what you want to You must make a A decide B decision C decisive D decisively He is interested in the of old buildings A preserve B preservation C preservative D preserved He has very high of his only son A expect B expectation C expected D expectedly All of us need the of fresh air A provide B provided C provision D provisions Farmers need to crops A rotation B rotate C rotational D rotationally 10 We are discussing about a problem of great A important B importance C importantly D import Exercise 3: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions He doesn't have a job He is A employed B unemployed C employer D employee The cost of must be paid by the buyer A carry B carriage C carrying D carried We have to the natural resources of our country A conservation B conserve C conserved D conservational The industrial will lead to the country's prosperity A develop B development C developing D developed Forests must be managed A careless B careful C carefully D care Her from school without any excuse made the teacher angry A absent B absence C absently D absences The little boy felt very because his parents did not let him go with them A disappoint B disappointment C disappointed D disappointing Your new dress makes you more A beauty B beautiful C beautify D beautifully There are a lot of differences in England A region B regional C regionally D regions 10 The surgeons tried their best to save his life, but unfortunately the operation was A success B successful C unsuccessful D sucsessfully Exercise 4: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions During his the family lived in Cornwall A child B childlike C childish D childhood How many were there in all? A compete B competitions C competitive D competitors We won't buy the car until the arises A necessary B necessity C necessarily D unnecessary waste is one of the causes of air pollution A Industrious B Industrial C industry D industrialization Mount Vesurius is an volcano A act B active C action D activity He is confident enough to express his opinion A comfortable B comfort C comfortably D uncomfortable She is so busy with activities that she has no time for entertainment A society B social C sociable D socialization One day, young Faraday attended a lecture given by a scientist, Sir Humphry Davy A famous B fame C famously D infamous He has been very interested in doing research on since he was at high school A Biology B biological C biologist D biologically 10 You are old enough to take for what you have done A responsible B responsibility C responsibly D irresponsible Exercise 5: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions These quick and easy can be effective in the short term, but they have a cost A solve B solvable C solutions D solvability He was looking at his parents _, waiting for recommendations A obey B obedience C obedient D obediently The interviews with parents showed that the vast majority were of teachers A support B supportive C supporter D supporting It is of you to leave the medicine where the children could reach it A care B caring C careless D careful For reasons, passengers are requested not to leave any luggage unattended A secure B securely C security D securing The leader of the explorers had the great in his native guide A confident B confidence C confidential D confidentially We are impressed by his to help us with the hard mission A will B willing C willingness D willingly Although they are twins, they have almost the same appearance but they are seldom in A agree B agreeable C agreement D agreeably The more and positive you look, the better you will feel A confide B confident C confidently D confidence 10 It is reported that humans are the main reason for most species' declines and habitat and degradation are the leading threats A destroy B destructive C destructor D destruction Exercise 6: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions Many Vietnamese people their lives for the revolutionary cause of the nation A sacrifice B sacrificed C sacrificial D sacrificially They had a candlelit dinner last night and she accepted his proposal of marriage A romance B romantic C romantically D romanticize Are there any between Vietnamese and American culture? A differences B different C differently D differential Some people are concerned with physical when choosing a wife or husband A attractive B attraction C attractiveness D attractively What could be more than a wedding on a tropical island? A romance B romantic C romanticize D romanticism In my hometown, many people still believe in marriage A contract B contractual C contracts D contracting Though their performance was not perfect yet, the students held the audience's until the end A attentive B attention C attentively D attentional The survey will cover various ways of the different attitudes toward love and marriage of today's youth A determination B determine C determined D determining Both Asian and Western students seem about how to answer the questionnaire of the survey A confusedly B confused C confusing D confusion 10 She was unaware of the embarrassing situation due to her different cultural background A complete B completed C completing D completely Exercise 7: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions What is more important to you, intelligence or ? A attraction B attractiveness C attractive D attract They started, as gatherings but they have become increasingly formalized in the last few years A informal B informally C informalize D informality Children who are isolated and lonely seem to have poor language and A communicate B communication C communicative D communicator There is a wide range of in the education system of the USA A select B selective C selected D selection As an , Mr Pike is very worried about the increasing of juvenile delinquency A educate B education C educator D educative He did not well at school and left with few qualifications A academic B academy C academician D academically The Minister of the Education and Training Department appeared on TV last night to his new policy A public B publicly C publicize D publicizing He owed his success not to privilege but to self-education and a driving desire for A achieve B achiever C achievement D achievable To Vietnamese students, the examination to university is very difficult A require B requirement C requisite D required 10 Despite many recent advances, there are parts where schools are not equipped with computers A technology B technological C technologically D technologist Give the correct form of the words in blankets The University of Ho Chi Minh City has a very large language centre (nation) I think the prices here are (reason) This company offered a lot of jobs (attract) The work in Con Moong Cave area has been carried out for several years (EXCAVATE) These chemicals are _.They can cause death or illness if taken into the body (poison) If you are when you write your composition, you will probably get a good grade (care) There have been many _ developments in this century (wonder) English has become an _ means of communication.(effect) “Time” is an American _ news magazine (week) 10 Don’t be afraid of the dog He’s _ (harm) PRACTICE EXERCISES Exercise 1: Mark the letter A, B, c or D on your answer sheet to indicate the correct answer to each of the following questions Faraday made many in the field of physics and chemistry A discover B discoveries C discovered D discovering Faraday was an in Davy's laboratory A assistance B assist C assistant D assisted The generator is one of Faraday's most important A achievements B achievement C achieve D achieving His of the generator is very famous A invent B inventive C invention D inventor We will our English vocabulary if we read English books every day A rich B richness C enrich D richly You study very well It's that you will fail the exam A possible B impossible C possibility D impossibility Lan always shares her with me A sadness B sad C sadly D unsad These children have the to imitate animals' voice A able B ability C disable D disability Money doesn't bring to man A happy B happiness C happily D unhappy 10 Good students aren't intelligent students A necessary B necessity C necessarily D unnecessary Exercise 2: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions I don't believe what he has just said It is A reason B unreasonable C reasonably D reasoning The teacher does everything in order to her students A courage B encourage C encouragement D encouraged What is his ? Is he American or English? A national B nationality C nationalize D international You should spend your free time A useful B useless C usefully D uselessly Please decide what you want to You must make a A decide B decision C decisive D decisively He is interested in the of old buildings A preserve B preservation C preservative D preserved He has very high of his only son A expect B expectation C expected D expectedly All of us need the of fresh air A provide B provided C provision D provisions Farmers need to crops A rotation B rotate C rotational D rotationally 10 We are discussing about a problem of great A important B importance C importantly D import Exercise 3: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions He doesn't have a job He is A employed B unemployed C employer D employee The cost of must be paid by the buyer A carry B carriage C carrying D carried We have to the natural resources of our country A conservation B conserve C conserved D conservational The industrial will lead to the country's prosperity A develop B development C developing D developed Forests must be managed A careless B careful C carefully D care Her from school without any excuse made the teacher angry A absent B absence C absently D absences The little boy felt very because his parents did not let him go with them A disappoint B disappointment C disappointed D disappointing Your new dress makes you more A beauty B beautiful C beautify D beautifully There are a lot of differences in England A region B regional C regionally D regions 10 The surgeons tried their best to save his life, but unfortunately the operation was A success B successful C unsuccessful D sucsessfully Exercise 4: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions During his the family lived in Cornwall A child B childlike C childish D childhood How many were there in all? A compete B competitions C competitive D competitors We won't buy the car until the arises A necessary B necessity C necessarily D unnecessary waste is one of the causes of air pollution A Industrious B Industrial C industry D industrialization Mount Vesurius is an volcano A act B active C action D activity He is confident enough to express his opinion A comfortable B comfort C comfortably D uncomfortable She is so busy with activities that she has no time for entertainment A society B social C sociable D socialization One day, young Faraday attended a lecture given by a scientist, Sir Humphry Davy A famous B fame C famously D infamous He has been very interested in doing research on since he was at high school A Biology B biological C biologist D biologically 10 You are old enough to take for what you have done A responsible B responsibility C responsibly D irresponsible Exercise 5: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions These quick and easy can be effective in the short term, but they have a cost A solve B solvable C solutions D solvability He was looking at his parents _, waiting for recommendations A obey B obedience C obedient D obediently The interviews with parents showed that the vast majority were of teachers A support B supportive C supporter D supporting It is of you to leave the medicine where the children could reach it A care B caring C careless D careful For reasons, passengers are requested not to leave any luggage unattended A secure B securely C security D securing securely (adv): cách an toàn, chắn security (n): an toàn, an ninh secure - securing (v): bảo vệ Cần danh từ đứng trước danh từ "reasons" để tạo thành danh từ ghép mang nghĩa "lý an toàn" =>For security reasons, passengers are requested not to leave any luggage unattended Tạm dịch: Vì lý an tồn, u cầu hành khách không sơ ý để lại hành lý nào.6 The leader of the explorers had the great in his native guide A confident B confidence C confidential D confidentially We are impressed by his to help us with the hard mission A will B willing C willingness D willingly Although they are twins, they have almost the same appearance but they are seldom in A agree B agreeable C agreement D agreeably The more and positive you look, the better you will feel A confide B confident C confidently D confidence 10 It is reported that humans are the main reason for most species' declines and habitat and degradation are the leading threats A destroy B destructive C destructor D destruction Exercise 6: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions Many Vietnamese people their lives for the revolutionary cause of the nation A sacrifice B sacrificed C sacrificial D sacrificially They had a candlelit dinner last night and she accepted his proposal of marriage A romance B romantic C romantically D romanticize Are there any between Vietnamese and American culture? A differences B different C differently D differential Some people are concerned with physical when choosing a wife or husband A attractive B attraction C attractiveness D attractively What could be more than a wedding on a tropical island? A romance B romantic C romanticize D romanticism In my hometown, many people still believe in marriage A contract B contractual C contracts D contracting Though their performance was not perfect yet, the students held the audience's until the end A attentive B attention C attentively D attentional The survey will cover various ways of the different attitudes toward love and marriage of today's youth A determination B determine C determined D determining Both Asian and Western students seem about how to answer the questionnaire of the survey A confusedly B confused C confusing D confusion 10 She was unaware of the embarrassing situation due to her different cultural background A complete B completed C completing D completely Exercise 7: Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions What is more important to you, intelligence or ? A attraction B attractiveness C attractive D attract They started, as gatherings but they have become increasingly formalized in the last few years A informal B informally C informalize D informality Children who are isolated and lonely seem to have poor language and A communicate B communication C communicative D communicator There is a wide range of in the education system of the USA A select B selective C selected D selection As an , Mr Pike is very worried about the increasing of juvenile delinquency A educate B education C educator D educative He did not well at school and left with few qualifications A academic B academy C academician D academically The Minister of the Education and Training Department appeared on TV last night to his new policy A public B publicly C publicize D publicizing He owed his success not to privilege but to self-education and a driving desire for A achieve B achiever C achievement D achievable To Vietnamese students, the examination to university is very difficult A require B requirement C requisite D required 10 Despite many recent advances, there are parts where schools are not equipped with computers A technology B technological C technologically D technologist Give the correct form of the words in blankets 11 The University of Ho Chi Minh City has a very large language centre (nation) – National 12 I think the prices here are (reason) -reasonable 13 This company offered a lot of jobs (attract) - attractive 14 The work in Con Moong Cave area has been carried out for several years (EXCAVATE) excavated 15 These chemicals are _.They can cause death or illness if taken into the body (poison) poisonous 16 If you are when you write your composition, you will probably get a good grade (care) careful 17 There have been many _ developments in this century (wonder) - wonderful 18 English has become an _ means of communication.(effect) - effective 19 “Time” is an American _ news magazine (week) - weekly 20 Don’t be afraid of the dog He’s _ (harm) - harmless