74. -Who is the girl standing over there?

　 - Well, if you _____ know, her name is Mabel.

　　 A. may　　　　　　　　　　　　　 B. can

C. must　　　　　　　　　　　　 D. shall

73. I _______ pay Tom a visit, but I am not sure whether I will have time this Sunday.

　　 A. should　　　　　　　　　　　　　 B. might

C. would　　　　　　　　　　　　　　 D. could

72. -Why hasn’t the speaker turned up?

　 -He _________ the flight. I’ll find it out at once.

　 A. must have missed　　　　　　　 B. might have missed

　 C. would have missed　　　　　　　 D. could have missed

71. -Shall I go and buy more fruit for the party?

　 -No, I have already bought 3 baskets. That _________ be enough.

　　 A. can　　　　　　　 　　　　　　 B. ought to

C. may　　　　　　 　　　　　　 D. might

70. -They haven’t finished the work up to now.

　 -Well, they________.

　　 A. should　　　　　 　　　　　　 B. should have

C. would　　　　　 　　　　　　　 D. must have

69. -Mary didn’t turn up last time, did she?

　 -No. She_________. We had changed our plan.

　　 A. shouldn’t have come　　　　　　 B. needn’t have to come

　　 C. didn’t need to come　　　　　　 D. needn’t have come

68. She is too slow. She ________ pass the test, but she __________ too little.

　　　 A. would; knew　　 　　 　　　　　　 B. will; knows　　　

C. would; knows　 　　　 　　　　　　 D. will; knew

67. -The farmers lived near the high way.

　　 -________ very noisy.

　　 A. It must have been 　　　　　　　 B. They must be

C. That might be　　 　　　　　　　 D. There must be

66. -Many people in England love to give advice on weather reporting.

　　 -Yes, but I think the weather office’s computers _________ be more accurate.

　　 A. can　　　　　　　 　　　　　　 B. must

C. ought to　　　　 　　　　　　　 D. might

65. It is not like Jack to be unfriendly, so he _________ you when you called.

　　 A. can’t have seen　　　　　　　　 B. should not have seen

　　 C. must not have seen　　　　　　　 D. need not have seen