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vipht21
2 năm trước
Xác định các chất A, B, C, D, E, F và viết phương trình thực hiện chuyển hóa sau (ghi rõ đk nếu có) A+O2 -->B--> C--> D--> B--> E--> F--> B
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31. If I ___ as young as you are, I ___ in a boat round the world. A. were- would sail B. would be – would sail C. were- will sail D. would- would sail 32. If he___tickets yesterday, he ___ on the beach now. A. had booked- would be lying B. had booked- would have lied C. booked – would lie D. books- will lie 33. If you ___ less last night, you ___ so bad today. A. had drunk- would not have felt B. drank- would not feel C. had drunk- would not feel D. would have drunk- would not feel 34. It seemed as if he ___ of it before. A. would never hear B. has never heard C. never heard D. had never heard 35. ___ today, she would get home by Friday. A. Would she leave B. Was she leaving C. Were she to leave D. If she leaves “He ’ s a very brave man.” “Yes, I wish I ___ his courage.” A. have B. had C. will have D. would have 37. ___he___ hard last year, he would have lost the first prize. A. Hadn ’ t – studied B. Had- studied C. Didn ’ t study D. If – had studied 38. We ’ re going to be late if ___. A. we not leave right now B. we didn ’ t leave right now C. we won ’ t leave right now D. we don ’ t leave right now 39. “I wish this city___ so noisy.” “I know. I wish we ___ in the countryside.” A. isn ’ t – live B. wasn ’ t – live C. weren ’ t- live D. weren ’ t – lived 40. He acted as though he___ for days. A. not eat B. hasn ’ t eaten C. hadn ’ t eaten D. didn ’ t eat 41. We ___ the game if we ’ d had a few more minutes. A. might have won B. won C. had won D. will win 42. I ___ William with me if I had known you and he didn ’ t get along with each other. A. hadn ’ t brought B. didn ’ t bring C. wouldn ’ t have brought D. won ’ t bring 43. If you ___ to my advice in the first place, you wouldn ’ t be in this mess right now. A. listen B. will listen C. had listened D. listened 44. ___ interested in that subject, I would try to learn more about it. A. Were I B. Should I C. I was D. If I am 45. I ___ you sooner had someone told me you were in the hospital. A. would have visited B. visited C. had visited D. visit 46. ___ then what I know today, I would have saved myself a lot of time and trouble over the years. A. Had I known B. Did I know C. If I know D. If I would know 47. Do you think there would be less conflict in the world if all people ___ the same language? A. spoke B. speak C. had spoken D. will speak 48. Unless you ___ all of my questions, I can ’ t do anything to help you. A. answered B. answer C. would answer D. are answering 49. Had you told me that this was going to happen, I ___ it. A. would never have believed B. don ’ t believe C. hadn ’ t believed D. can ’ t believe 50. If Jake ___ to go on the trip, would you have gone? A. doesn ’ t agree B. didn ’ t agree C. hadn ’ t agreed D. wouldn ’ t agree ai giúp mình với ạ!!!giải thích hộ mình tại sao lại chọn ý đấy với ạ chứ đừng ghi mỗi kết quả

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