chon phương án đúng ----- Nội dung dịch tự động từ ảnh ----- D. Could you C. Would you B. Would you mind wash them. A. Can you ". The windows look clean. You D. mustn't C. don't have to A. are not to B. needn't B. I don't believe it. It be true. D. wouldn't B. mustn't C. shouldn't A. can't 9. Young people obey their parents. B. may C. will D. ought to A. must 10. Jenny's engagement ring is enormous! It B. might have cost a fortune. A. must C. will D. should 11. You to write them today. A. should B. must C. had D. ought 12. " you hand me that pair of scissors, please?" A. May B. Will C. Shall D. Should 13. Jeanette did very badly on the exam. She harder. A. must have studied B. could have studied C. should have studied D. must studied 14. Marcela didn't come to class yesterday. She an accident. A. should have had B. must have C. might have D. may have had 15. John still hasn't come out. He everything for the trip now. A. must have been preparing B. must be preparing C. will be preparing D. will have prepared