57. Could I borrow your dictionary?　　 Yes, of course you______.

A. might B. will C. can D. should

56. I didn't see her in the meeting room this morning.　 She 　at the meeting.

A. mustn't have spoken B. shouldn't have spoken

C: needn't have spoken D. couldn't have spoken

55. He _____ you more help, even though he was very busy.

A. might have given B. might give

C. may have given D. may give

54. May I stop here?

No, you ____.

A. mustn't B. might not C. needn't D. won't

53. We for her because she never came.

A. mustn't have waited B. shouldn't have waited

C. mustn't wait D. needn't wait

52. Please open the window,________?

A. can't you B. aren't you C. do you D. will you

51. It's still early, you______.

A. mustn't hurry B. wouldn't hurry

C. may not hurry D. don't have to hurry

50. There was plenty of time. She______.

A. mustn't have hurried B. couldn't have hurried

C. must not hurry D. needn't have hurried

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

A. may B. might C. could D. must

48. With so much work on hand, you to see the game last night.

A. mustn't go B. shouldn't go

C. couldn't have gone D. shouldn't have gone