Tìm x, biết: x³ - 7x² = 7 - x Làm theo phương pháp đặt nhân tử chung nha.

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5. Choose the best answer to complete each of the following sentences. 1. Last week, he told us that we a picnic at the end of the week on Friday. A. can have B. did have C. would have D. had had 2. Four days ago she promised that she was going to visit me but she didn’t arrive. A. tomorrow B. next day C. the day before D. the next day 3. When I met her, she admitted that she to the park the night before. A. went B. had gone C. was going D. did go 4. When asked by the teacher, all students said they literature. A. liked B. are liking C. were liking D. had like  5. When I phoned him, he told me that he in the garden, reading a newspaper. A. sat B. was sitting C. had sat D. has sat 6. When I saw her, she told me that she hadn’t come to the party because she had gone to the embassy in London. A. yesterday B. before day C. the before day D. the day before 7. He called the school and said that he to school because he had an accident. A. didn’t come B. couldn’t come C. doesn’t come D. wasn’t come 8. My close friend told me that he studying in America. A. likes B. liked C. had liked D. was liking 9. When we asked her about the film, she told us that she a more interesting film than that. A. never saw B. never seen C. had never seen D. did never see 10. Diana told us that she was going to visit boyfriend in Rome the next week and wouldn’t come to class. A. my B. her C. your D. their 11. He wanted to know where she from. A. come B. coming C. to come D. came 12. I asked her to pursue higher studies the next year. A. are you planning B. if she is planning C. was she planning D. if she was planning 13. I asked her when A. the movie began B. the movie begins C. does the movie begin D. did the movie begin 14. I promised I there before she came back. A. am going to be B. was going to be C. will be D. can be 15. Peter asked her, “Have you got a laptop?” → Peter asked her a laptop. A. if she got B. if she had got C. whether she got D. whether had she got 16. My mother told me her up at the airport. A. please pick B. to pick C. should pick D. I can pick 17. He revealed that they married A. were getting - tomorrow B. are getting - the next day C. were getting - the next day D. will getting - the day after 18. He wanted to know when A. did I arrive B. will I arrive C. I had arrived D. I can arrive 19. The father said, “I didn’t see her.” → The father said her. A. he had seen B. I hadn’t seen C. she didn’t see D. he hadn’t seen 20. I wondered the right thing. A. if I am doing B. was I doing C. am I doing D. whether I was doing

Ex3: Give the correct forms of the verbs 1.If I (know) ………………………..his phone number, I would call him. 2. I (not buy) ……………………….this coat if I were you. 3. If She (come) ………………………. late again, she’ll lose her job. 4. I (help) ……………………….you if I could, but I’m afraid I can’t. 5. If I (have) …………………. wings, I (not, have to) ………………….take an airplane to fly home. 6. We would need less money if we (live) ………………………. in the country. 7. If it (be) ……………………….fine tomorrow, we will go to the coast. 8. We (phone) ……………………….you if we have time. 9. If it didn’t rain, I (come) ……………………….to see you. 10. I (drive) ………………………. to work if I had a car. 11. Where in Vietnam would you like to live if you (can) ……………………….choose? 12. If the weather (be) ………………………. good, we will have lunch outside. 13. if the company offers me a job, I think I (take) ……………………….it. 14. Many people would be unemployed if that factory (close) ……………………….down. 15. If you finish before 4:30, I (come) ………………………. and pick you up. 16. They would have paid you more if they (be told) ……………………….of its value 17. If I (know) ……………………….about the job, I would have applied for it. 18. If they had enough money, they (buy) ………………………. that house. 19. If you (have) ……………………….breakfast, you wouldn’t have been hungry. 20. If he (study) ……………………….harder, he would have passed the exams. 21. If I (have) ………………………. time, I’ll (go) ……………………….with you. But in fact I’m very busy 22. We would have a lot of fun If we (go) ……………………….there. 23. I lost my job last year. If I were younger, I (not lose) ……………………… .24. Where you (go) ……………………….If you had more time? 25. I (not do) ……………………….that If I (be) ……………………….you. 26. If it (be) ……………………….convinient, let’s (meet) ……………………….at 7. 27. If you (kick) ……………………….the dog, you (bite) ………………………. 28. She doesn’t like Hollywood. She (not live) ………………….there If she (be) ……… a film star. 29. If it hadn’t rained yesterday, the football match (be) ……………………….great fun. 30. If we (play) ……………………….better, we might have won. 31.If we meet at 9:30, we (have) plenty of time. 31.Lisa would find the milk if she (look) in the fridge. 32.The zookeeper would have punished her with a fine if she (feed) the animals. 33.If you spoke louder, your classmates (understand) you. 34.Dan (arrive) safe if he drove slowly. 31. You (have) no trouble at school if you had done your homework. 32. If you (swim) in this lake, you’ll shiver from cold. 33. The door will unlock if you (press) the green button. 34. If Mel (ask) her teacher, he’d have answered her questions. 35. I (call) the office if I (be) you. 36. If they (listen) carefully, they might hear the woodpecker. 37. If I had lain down on the sofa, I (fall) asleep. 38. Ngoc could have worked as a model if she (be) taller. 39. The soil (not/dry out) if you water the plants regularly. 40. If you (give) the young boy this stick, he’d hurt himself. 41. We (not/take) the wrong tram if Dzung had asked the policewoman. 42. If the cat hides in the tree, the dog (not/find) it. 43. The students would have solved the problem if they (use) their textbooks. 44. If he washed his feet more often, his girlfriend (visit) him more often. 45. Manh (read) the newspaper if he went by train.