1. —Do you think he will do me a favor ?
—As far as I know, he is the last one to help others. He _____ be prepared to give you a hand, though.
A. might B. must C. can D. should
分析：本题考查情态动词推测性用法。 根据he is the last one to help others.(他是最不可能帮助别人的人)，既然如此，那么"帮助你"的可能性也就最小了。 答案为A
2. —Look, someone is coming. Guess who it ____ be ?
—I don’t think it ___ be ____ .
A. can ; must ; can ; he B. may ; can ; must ; him
C. must ; can ; must ; his D. might ; must ; can ; himself
分析：根据备选答案。 can表示推测时用于疑问句或否定句中。本题首句就应该是Guess who can it be? 第二句应该是I think it must be Tom.(说话人十分肯定)。第三句表达了说话人对前一个人的否定。即：I don’t think it can be him/he.(不可能是他)。答案为A
3. —Do you know Ms. Wang likes walking after supper ?
—Sure. She ____ around the campus now.
A. must be walking B. must walk
C. may walk D. may be walking
分析：关键词Sure告诉我们说话人的口气十分肯定。根据句子语境：她此刻肯定正在校园散步呢。must be doing表示肯定正在做。答案为A
4. —I stayed at a hotel in New York.
—Oh, did you ? You _____ with Barbara.
A. could have stayed B. could stay C. would say D. must have stayed
分析：首句说：我在纽约住在一家宾馆里。在此a hotel是泛指。所以D选项不合题意。第二句在说：你本来可以和Barbara.住在一起的。Could have done表示：本来可以。答案为A
5. Why didn’t you tell me there was no meeting today ? I _____ all the way here through the heavy snow.
A. needn’t have driven B. can’t have driven
C. mustn’t have driven D. shouldn’t have driven
分析：根据句意：你为什么不告诉我今天没有会?我本来没必要冒着大雪开车跑这么多路。Needn’t have done表示本来没必要。答案为A
6. I was really anxious about you. You _____ home without a word.
A. mustn’t leave B. shouldn’t have left
C. couldn’t have left D. needn’t leave
分析：根据句意：我真的很担心你，你真不应该一句话都不说就离开家。"离开家"已经发生了。Should have done正好表达了本句的意思。答案为B
7. A：Are you coming to Jeff’s party ?
B：I’m not sure. I _____ go to the concert instead.
A. must B. would C. should D. might
分析：根据B的回答：我不一定去，我有可能去听音乐会。Might表示推测：可能。答案为D
8. A：I promise that she ____ get a nice present on her birthday.
B：Will it be a big surprise to her ?
A. should B. must C. would D. shall
分析：A说："我答应她在生日聚会上她会得到一份生日礼物。shall表示许诺。答案为D
