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GRADE 12 UNIT 9 Exercise 1: so, but, therefore, however 1. The wind was howling outside,___________it was warm and comfortable indoor. 2. The highway was under construction,_____________we had to take a different route to work. 3. You could fly via Singapore;_____________, this isn't the only way. 4. There is still much to discuss. We shall,_____________, return to this item at our next meeting. 5. It isn't that he lied exactly, ____________he did tend to exaggerate. 6. I thought the plane would be delayed;______________, I bought a lot of magazines to read. 7. Jackson was going to study all night,______________he declined our invitation to dinner. 8. We thought the figures were correct.______________, we have now discovered some errors. 9. Cars have become much more complicated. __________ , mechanics need more training than in the past. 10. We arrived at the theater late __________ the play had not yet begun. We were quite surprised. 11. Prices have been rising. It is unlikely, ____________, that this increase will continue. 12. The bread was old and stale, ____________Martha ate it anyway. 13. The holiday had been a complete disaster. We, decide to fly home early if we could. 14. He failed the exam,_____________he had to do the job he didn't like. 15. The expedition hoped to climb the mountain by August. __________ bad weather could be a hindrance. Exercise 2: Choose the best option 1. I want to work as an interpreter in the future, ________, I am studying Russian at university. a. but b. so c. however d. therefore 2. I am going shopping for food this evening ________ I do not have to go at the weekend. a. so b. but c. however d. moreover 3. When she got the news from her family, she could not do anything, ________ cry. a. but b. and c. so d. however 4. We live in the same building ________ we have hardly seen each other a. and b. therefore c. but d. so 5. I went to buy a Rolling Stones CD ________ the shop didn't have it. a. and b. but c. therefore d. so 6. Anna needed some money, ________, she took a part-time job. a. furthermore b. moreover c. however d. therefore 7. Julie has a guitar ________ she plays it really well. a. and b. so c. but d. therefore 8. My fingers were injured ________ my sister had to write the note for me. a. and b. however c. so d. but 9. The concert was cancelled ________ we went to a nightclub instead. a. so b. however c. so on d. but 10. He is only sixteen, and ________, he is not eligible to drive a car. a. nevertheless b. but c. therefore d. however 11. Maria tried to read a novel in French ________ the book was too difficult for her to understand. a. so that b. therefore c. but d. and 12. To get from Vancouver to Victoria, you can fly, __ you can ride the ferry. a. or b. but c. so d. however 13. I bought a bottle of wine ________ we drank it together. a. therefore b. so c. and d. but 14. The waiter was not very nice, ________, the food was delicious. a. however b. but c. so d. and so 15. ___ hard he worked, he could earn enough money to support the family. a. But b. However c. Therefore d. Whatever UNIT 10 1 "Would you like to go with me to the Williams' wedding next month?" "I'm not sure. I_______________be too busy with school work." A. will B. might C. maybe D. should 2. A / an _______ species is a population of an organism which is at risk of becoming extinct. a. dangerous b. endanger c. endangered d. endangerment 3.Only a few of the many species at risk of extinction actually make it to the lists and obtain legal _______. a. protect b. protection c. protective d. protector 4.Probability of extinction depends _______ both the population size and fine details of the population demography. a. on b. in c. from d. for 5. 15,589 species (7,266 animal species and 8,323 plant species) are now considered _______ risk _______ extinction. a. at / of b. on / in c. for / with d. in / at 6. It is found that endangered species are often concentrated in areas that are poor and densely populated, such as much of Asia and Africa. a. disappeared b. increased c. threatened d. reduced 7. _______ is the existence of a wide variety of plant and animal species living in their natural environment. . a. Biodiversity b. Conservation c. Globe d. Individual 8. She ___ be ill. I have just seen her playing basket ball in the school yard. a. needn't b. shouldn't c. mustn't d. can't 9. Peter has been working for 10 hours. He _______ be very tired now. a. needn't b. must c. has to d. should 10. a. gorilla b. orange c. village d. encourage 11. a. habitat b. rhinoceros c. household d. hummock 12. a. chemistry b. character c. chance d. mechanic 13. When I was on holiday last summer, I was going to beach every day. A B C D 14. It was raining but I took an umbrella. A B C D 15. Our teacher came in when we are talking noisily. A B C D 16. Pollution is one of the main causes of species extinct. A B C D III. Choose the best answer to complete the following sentences. 17. The Red List is a special book that provides names of … animals. a. rare b. protected c. special d. endangered 18. ……is the natural environment in which a plant or animal lives. a. place b. habitat c. habitant d. environment 19. Sue isn’t usually here … weekends. She goes away. a. at b. of c. in d. for 20. You …keep it secret or they will kill you. a. may b. must c. can d. need 21. The life … of a rhinoceros in the wild is about 40 years. a. time b. age c. span d. duration 22. She has kept some pets Some pets ……… ……………………………………………………………… 23. It was cold, but I didn’t put on my coat. ( however) …………………………………………………………………………………… 24. Mary came to class late because it rained heavily If………………………………………………………………………………… 25. You are not allowed to use my motorbike. (mustn’t) ……………………………………………………………………………………. . GRADE 12 UNIT 9 Exercise 1: so, but, therefore, however 1. The wind was howling outside,___________it. surprised. 11. Prices have been rising. It is unlikely, ____________, that this increase will continue. 12. The bread was old and stale, ____________Martha ate it anyway. 13. The holiday had been a complete. ________ the book was too difficult for her to understand. a. so that b. therefore c. but d. and 12. To get from Vancouver to Victoria, you can fly, __ you can ride the ferry. a. or b. but c. so