một vật chuyển động trên đoạn đường AB dài 240m.Trong 1/3 đoạn đường đầu tiên nó đi với vận tốc v1=5m/s.Trong 2/3 đoạn đường sau nó đi với vận tốc v2=6m/s.Tính thời gian vật chuyển động hết quãng đường AB

21. May I suggest you let _______. A. Mary doing so B. Mary do so C. Mary does so D. Mary to do so 22. My father usually helps me_______ English. A. to learn B. learn C. learning D. both A and B are correct 23. Mr. Brown told the schoolgirls_______ in class. A. don't eat B. not to eat C. eat not D. not eat 24. President Roosevelt asked Archibald Mac Leish_______as the Librarian of Congress. A. serving B. to serve C. to be served D. served 25. This student expected_______ the first winner of the Grand Prix. A. be B. being C. to be D. will be 26. He told Mary_______ up hope. A. not give B. do not give C. not to give D. to give not 27. The Nusret used _______ a warship in the First World War. A. to have been B. be C. to being D. to be 28. _______ all the homework, I went to bed. A. Have finished B. Having finished C. To finish D. Finish 29. I had my brother _______ my suitcase. A. carry B. carried C. to carry D. to carried 30. The school superintendent told me_______. A. hurrying up B. to hurry up C. hurry up D. hurried up 31. If you can't turn the key, try _______ some oil in the lock. A. to put B. put C. putting D. puts 32. She should avoid _______other people’s feeling. A. hurting B. to hurt C. hurt D. hurts 33. Our house needs_______. A. to paint B. to be painting C. to be paint D. painting 34. I arranged _______ the American businessmen on behalf of my company. A. to meet B. met C. to be meet D. meets 35. I decided _______ to the theatre myself as the others didn't want to come with me. A. go B. to go C. going D. gone

Câu 14 giúp em ạ em cảm ơn mn nhiều lắm

Giúp mình phần chuyển câu bị động với ạ

1. If, as the radio says, there ________ ice on the pools in the morning, the temperature could have been -2° or lower. At zero no ice is formed on the surface of water. A. had been B. would be C. were D. was

11. Students stopped _______noise when the teacher came in. A. make B. to make C. making D. made 12. It can be difficult _______ a jogging partner. A. find B. to find C. finding D. to be find 13. He is learning _______ football these days. A. to play B. playing C. plays D. played 14. The teacher asked the class_______ quiet. A. keep B. keeping C. to keep D. kept 15. I did not plan _______so much money on my vacation. A. spending B. spend C. spent D. to spend 16. He advised me_______ for the interview at home. A. practicing B. to practice C. practiced D. practice 17. I am going to explain why I decided _______ to college. A. go B. going C. to go D. went 18. The doctor advised_______ late. A. me not staying up B. me not stay up C. me not to stay up D. I did not stay up 19. Try_______ so many mistakes. A. not to make B. not make C. to make not D. make not 20. Let me_______ from you soon. A. to hear B. hear C. hearing D. heard

theo anh, chị để nâng cao vai trò của nhà nước ta trong giai đoạn hiện nay cần chú trọng giải quyết những vấn đề gì

Một thửa ruộng hình chữ nhật có chiều dài 72m.chiều rộng bằng 1/4 chiều dài.tính diện tích thửa ruộng đó

1. My friend really enjoys _______ books magazines. A. read B. to read C. reading D. to reading 2. Jennifer wants _______ her friends in SanFrancisco next week. A. to visit B. visiting C. visited D. visits 3. I’d like _______ a cup of tea in the early afternoon. A. drink B. to drink C. drinking D. drinks 4. I really dislike _______ on holidays and weekends. A. work B. to work C. working D. to working 5.We decided _______ a new car. A. buying B. to buy C. buy D. buys 6. I learned _______ the bike at the age of 5. A. ride B. riding C. to riding D. to ride 7. I hate _______ money from other people. A. borrow B. to borrow C. to be borrowing D. borrowing 8. He wants _______ Spanish as it's becoming more important. A. to learn B. learning C. learns D. to learning 9. I would like you _______ the plants for me at the weekend. A. water B. to water C. watering D. watered 10. If you decide _______ your car, let me_______. A. sell/ know B. selling/ to know C. to sell/ to know D. to sell/ know

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