BÀI LUYỆN NGỮ PHÁP 1 – PHẦN THỜI THÌ Exercise 1. Give the correct forms of verbs in brackets. On June 20 th , I returned home. I ( 1 – be ) _______ away from home for two years. My family ( 2 – meet ) ________ me at the airport with kisses and tears. They ( 3 – miss ) _______ me as much as I had missed them. I ( 4 – be ) ______ very happy to see them again. When I ( 5 – get) __________ the chance, I ( 6 – take ) _______ a long look at them. My little brother ( 7 – be ) ________ no longer little. He ( 8 – grow ) _________ at least a foot. He ( 9 – be ) ________ almost as tall as my father. My little sister ( 10 – wear ) ________ a green dress. She ( 11 – change ) _______ quite a bit, too, but she ( 12 – still be ) _________ mischievous and inquisitive. She ( 13 – ask ) ________ me a thousand questions a minute, or so it seemed. My father ( 14 – gain ) _________ some weight, and his hair ( 15 – turn ) _________ a little bit grayer, but otherwise he was just as I had remembered him. My mother ( 16 – look ) _________ a little older , but not much. The wrinkles on her face ( 17 – be ) ________ smile wrinkles. Exercise 2. Give the correct forms of verbs in brackets. Mark Twain, the author of The Adventures of Tom Sawyer, ( 1 – be ) ______ one of America’s best – loved storytellers. He ( 2 – grow up ) ________ in a small town on the Mississippi River. As a young boy, he ( 3 – greatly admire ) _________ the pilots of the riverboats and dreamed about being a riverboat pilot on the mighty river. He pursued his dream, and by the age of 22, he himself ( 4 – become ) ________ a riverboat pilot. Later in life, when he ( 5 – become ) _______ a writer, many of his stories ( 6 – contain ) _________ elements of his own experiences. He wrote many humourous stories and articles about life on the Mississippi River before he ( 7 – die ) ________ in 1910 at the age of 74. Sadly, Twain ( 8 – work ) _______ on a new story for several months before his death, but he ( 9 – never finish ) ________it. Over the years since his death, his boyhood home in Hanibal, Missouri, ( 10 – become ) _________ a favourite place for Americans to visit to learn about Twain and life on the Mississippi at the turn of the century. Exercise 3. Give the correct forms of verbs in brackets. Almost every part of the world ( 1 – experience ) ________ an earthquake in recent years. Since the ancient Chinese ( 2 – begin ) ________ to keep records thousands of years ago, more than 13 million earthquakes ( 3 – occur ) _________ worldwide by some estimates. What ( 4 – cause ) _______ earthquakes ? Throughout time, different cultures ( 5 – develop ) ________ myths to explain these violent earth movements. According to a Japanese myth, a playful catfish lives in the mud under the earth. Whenever it feels like playing, it ( 6 – wave ) ______ its tail around in the mud. The result ? Earthquake ! From India comes the story of six strong elephans who ( 7 – hold ) ______ up the earth on their heads. Whenever one elephant ( 8 – move ) ________ its head, the earth trembles. Nowadays, although scientists ( 9 – know ) _________ more about the causes of earthquakes, they still can’t prevent the terrible damage. One of the strongest earthquakes in this century ( 10 – happen ) ________ in Alaska, on March 24 th ,1964, at about 6 o’clock in the evening. When the earthquake ( 11 – strike ) ______ that evening, many families ( 12 – sit ) _______ down to eat dinner. People in the city ( 13 – suddenly find ) _____ themselves in the dark because most of the lights in the city went out when the earthquake occured. Many people ( 14 – die ) _______ instanly when tall buildings ( 15 – collapse ) ________. When the next earthquake ( 16 – occur ) ________ no one really ( 17 – know ) _____ for sure. Interestingly, throughout history, animals often ( 18 – help ) _______ people to predict earthquakes shortly before they happen. At present, some scientists ( 19 – study ) ________ catfish because catfish swim excitedly just before an earthquake. In recent years, scientists ( 20 – develop ) _______ many extremely sensitive instruments. Perhaps someday the instruments ( 21 – give ) _______ us a sufficiently early warning so that we can be waiting calmly in a safe place when the next earthquake ( 22 – strike ) ________. Exercise 4. Choose the best answer. 1. Robert is going to be famous someday. He _______ in three movies already. a. has been appearing b. had appeared c. has appeared d. appeared 2. “ Where’s Polly ?” . “ She ___________ “ a. is in her room studying b. in her room is studying c. studies in her room d. has in her room studied 3. “ Hello ! Alice. This is Jeff. How are you ?” “ Jeff ! What a coicidence ! I __________ about you when the phone rang” a. was just thinking b. just thought c. have just been thinking d. was just thought 4. “ What ________ about the new simplified tax ?” a. are you thinking b. do you think c. have you thought d. have you been thinking 5. “Let’s go. What’s taking you so long ?” . “ I’ll be there as soon as I _______ me key” a. found b. will find c. find d. am finding 6. Fish were among the earliest forms of life. Fish _______ on earth for ages and ages. a. existed b. are existing c. exist d. have existed 7. The phone ______ constantly since Jack announced his candidacy for president this morning. a. has been ringing b. rang c. had rung d. had been ringing 8. The earth _________ on the sun for its heat and light. a. is depended b. depending c. has depend d. depends 9. I don’t feel good. I ________ home from my work tomorrow. a. am staying b. stay c. will have stay d. have stayed 10. If coastal erosion continues to take place at the present rate, in another fifty years, this beach ________ anymore. a. doesn’t exist b. isn’t going to exist c. isn’t existing d. won’t be existing Exercise 5. Find and correct the mistakes in the following sentences. 1. Lan was studying here since last January. 2. By the time Lan returns to her country, Lan is away from home for more than 3 years. 3. As soon as she will graduate, she is going to return to her hometown. 4. She wants to get married, but she doesn’t meet the right person yet. 5. She has been seeing that film three times, and now she is wanting to see it again. 6. Last night, she has had dinner with two friends. She knew both of them for a long time. 7. She is not like her job at reataurant. Her brother wants her to change it. She is thinking he is right. 8. There are fewer than 40 presidents of the United States since it became a country. George Washington had been the first president. He was become the president in 1789. 9. Mr. Seller was just getting off the plane when he feels a sharp pain in his chest. 10. When I got home to my apartment last night, I use my key to open the door as usual. But the door didn’t open. I trying my key again and again with no luck. So I’m knocking on the door for my wife letting me in. Finally the door opens, but I don’t saw my wife on the other side. I saw a stranger. I tried to get into the wrong department ! I quickly apologizing and am went to my own department. . BÀI LUYỆN NGỮ PHÁP 1 – PHẦN THỜI THÌ Exercise 1. Give the correct forms of verbs in brackets. On June 20 th , I returned home. I ( 1 – be ) _______ away from home. little sister ( 10 – wear ) ________ a green dress. She ( 11 – change ) _______ quite a bit, too, but she ( 12 – still be ) _________ mischievous and inquisitive. She ( 13 – ask ) ________. century ( 10 – happen ) ________ in Alaska, on March 24 th ,19 64, at about 6 o’clock in the evening. When the earthquake ( 11 – strike ) ______ that evening, many families ( 12 – sit ) _______