ted his work; otherwise, he wouldn ’t be enjoying himself by the seaside. ( 北京卷) A. should B. must C. wouldn ’t D. can ’t 6.— Tom is never late for work. Why is he absent today? ( 江西卷) — Something ________ to him. A. must happen B. should have happened C. could have happened D. must have happened 7. John, look at the time. ___________ you play the piano at such a late hour? (全国卷 3) A. Must B. Can C. May D. Need 8. Tom, you leave all your clothes on the floor like this ! (全国卷 1) A. wouldn ’tB. mustn ’tC. needn ’tD. may not 9.I _______have been more than six years old when the accident happened. (天津卷) A. shouldn't B. couldn't C. mustn't D. needn't 10. This cake is very sweet. You __________ a lot of sugar in it. (辽宁卷) A. should put B. could have put C. might put D. must have put ACAAB, DABBD