27. At this moment she ____ with her classmates.

　　A. might play B. may play C. might be playing D. dare to play

　　28. Jenny ___ have kept her word. I wonder why she changed her mind.

　　A. must B. should C. need D. would

　　29. The doctor said the woman was still in danger and that no one except her husband ____ see her.

　　A. might B. could C. is allowed to D. was able to

　　30. He ___ the exam， but he wasn't careful enough.

　　A. were able to pass B. could have passed C. must have passed D. could be able to pass

　　31. I thought you ___ like something to read， so I have brought you some books.

　　A. may B. might C. could D. must

　　32. I talked about it with my friends Tom and Bill. Neither of them ___ suggest anything.

　　A. may B. might C. need D. could

　　33. May I smoke here? ______.

　　A. Yes， you must B. Yes， you do C. No， you needn't D. Please don't

　　34. Must we send in our plan this week? No， you ____.

　　A. mustn't B. can't C. may not to D. don't have to

　　35. You ___ bring my books back until next month.

　　A. need to B. mustn't C. can't D. needn't

　　36. Hurry up. He ____ for us at the railway station.

　　A. must wait B. must be waiting C. should wait D. should be waiting

　　37. Take some rest. You ___ tired after a long walk.

　　A. must be feeling B. can be feeling C. mustn't be D. cannot be

　　38. You ____ all the trouble if you had known he ___ there.

　　A. didn't need to take， was not B. must not have taken， hadn't been

　　C. needn't have taken， hadn't been D. needn't have taken， was not

　　39. How ____ climbing the tree?

　　A. dared he risked B. dare he risk C. dares he to risk D. dares he risk

　　40. I'm not quite myself today. You ___ see a doctor.

　　A. should have to B. had rather C. had best D. had better

　　41. I had suppose that the man ____ of the two noble men.

　　A. must be the elder B. should be older C. would be the older D. will be older

　　42. My brother is not engaged tonight， ___ he go to the film with you， Jim?

　　A. shall B. will C. could D. ought to

　　43. May I watch TV tonight? No， you ____.

　　A. shouldn't B. you'd better not to C. must D. may not

　　44. Don't believe him. I know he ___ be serious.

　　A. needn't B. may not C. mustn't D. can't

　　45. ____ it be Xiao Wang who broke the glass?

　　A. May B. Must C. Can D. Should

　　46. It's wrong of you to refuse his offer. You ___ it.

　　A. must accept B. should have received C. ought to have accepted D. should accept

　　47. Did he break the window? He ____ have done it.

　　A. need B. can C. may D. will not

　　48. The machine is useless. It ___ work.

　　A. won't B. shan't C. needn't D. doesn't

　　49. Peter ____ come with us tonight， but he isn't very sure yet.

　　A. can B. must C. may D. will

　　50. Has Jack's plane landed? No， but it ___ here in a few minutes.

　　A. ought to be B. have to be C. may have been D. should have been

　　51. The captain said firmly， “Everything ____ be done to save the ship.”

　　A. shall B. will C. may D. can

　　52. Shall I tell John about it? No， you ____ . I've told him already.

　　A. needn't B. wouldn't C. mustn't D. shouldn't

　　53. Don't forget to come to my birthday party tomorrow. _________.

　　A. I don't B. I won't C. I can't D. I haven't