1.John agreed to the suggestion that his students ________ two weeks to prepare for the exam.
A.give B.should give
C.be given D.would be given
[解析]suggestion, advice 等后的同位语从句用虚拟语气。should do 或 should be done, 其中 should 可以省略，his students 与 give 之间为被动关系，故C项正确。
[答案]C
2.You ________ pay too much attention to your reading skill, as it is so important.
A. can't B. should
C. must D. needn't
[解析]本题考查情态动词的特殊用法。句意：你一定要特别注意你的阅读技巧，因为它是如此重要。can't...too... 为固定句式，意为“再……也不为过;一定要……”，故A项正确。
[答案]A
3.________ everyone have a great Spring Festival!
A. Can B. Must
C. May D. Should
[解析]本题考查情态动词的特殊用法。句意：愿大家春节快乐!情态动词 may 可以表祝愿，用于倒装句中，故C项正确。
[答案]C
4. Naturally, when I tell her what to do, my daughter ________ go and do the opposite!
A. may B. can
C. must D. should
[解析]此处主要考查情态动词 must 的特殊意思“非要，非得，偏要，偏偏”，表示与说话人愿望相反。句意：通常，我告诉女儿做什么时，女儿非得做相反的事。
[答案]C
5.—May I smoke here?
—If you ________， choose a seat in the smoking section.
A. should B. could
C. must D. may
[解析]句意：—我可以在这儿吸烟吗?—如果你一定要吸的话，请在吸烟区选个座位。由语境可知，此处考查 must 表示“非得，偏要”这种语气的用法。
[答案]C
6.—Can I pay the bill by check?
—Sorry, sir. But it is the management rule of our hotel that payment ________ be made in cash.
A.shall B.need
C.will D.can
[解析]shall 与第二、三人称连用，表示命令，警告，允诺等语气。
[答案]A
7.Whenever we met, Lily ________ greet me first though I was younger than her.
A. must B. would
C. should D. could
[解析]句意：不管我什么时候遇见莉莉，虽然我比她年轻，她总是先向我打招呼。由语境可知，此处用 would 表示“过去常常”，指过去动作的重复，B项正确。
[答案]B
8.—Mum, I am sorry, but I failed in the English exam.
—So you ________ get the MP4 you want. I am sorry, too.
A. shall not B. might not
C. needn't D. shouldn't
[解析]根据所学知识可知 shall 用于陈述句中的第二、第三人称时，表示说话人的意图、允诺、警告、命令、决心等。由此可知此题的答案应该选择A。
[答案]A
9.According to the school rules, no student ________ go out of school without the permission of the teachers.
A. will B. must
C. may D. shall
[解析]主要测试 shall 的特殊用法：shall 用在条约、规章、法令等文件中表示义务或规定，一般用于第三人称。
[答案]D
10.—What time ________ I pick you up at your house tomorrow, sir?
—I haven't decided on the time. But I will call you.
A. may B. can
C. will D. shall
[解析]句意：—先生，我明天什么时候到你家来接你?—我还没有决定时间。但我会给你打电话。情态动词 shall 用于第一、第三人称的疑问句，表示请求或征求对方意见，此处为征求对方意见。
[答案]D
11.I can't imagine there ________ be a shortage of water in Yunnan, the southwest of China where there used to be adequate rain.
A. could B. must
C. might D. should
[解析]句意：我想像不出曾经雨水充沛的中国西南部的云南竟然缺水。should 可以表示一种语气，意为“竟然”，符合语境。
[答案]D
12.—How's your tour around the North Lake? Is it beautiful?
—It ________ be, but it is now heavily polluted.
A. will B. should
C. would D. must
[解析]句意：—你的环北湖之旅怎么样?那儿美吗?—它应该很美，但现在已严重污染了。should，“按常理该，应该”，符合语境。
[答案]B
13.On some British streets, there ________ be as many as five different garbage cans—that's confusing!
A.can B.have to
C.must D.shall
[解析]can 表示推测，意为“可能会”。
[答案]A
14.—Margaret ________ stay at home all day long in front of the computer.
—That's right. She should go to the fitness center with us.
A. doesn't have to B. couldn't
C. oughtn't to D. may not
[解析]句意：—Margaret 不应该整天待在家里坐在电脑前。—对。她应该跟我们到健身中心来。doesn't have to“不必”，相当于 needn't;couldn't“不能够，不可能”;oughtn't to“不应该”，相当于 shouldn't;may not“或许不”;由语境可知C项正确。
[答案]C
15.Hurry up! They ________ for us at the crossing.
A. must wait B. must have waited
C. must be waiting D. may wait
[解析]本题考查情态动词表推测。句意：快点!他们肯定在十字路口等我们。must 用于肯定的推测，意为“肯定会”;must be doing 强调某个动作现在肯定正在进行，符合语境。
[答案]C
16.Jackie, you ________ hang all your clothes in the room like this!
A.wouldn't B.needn't
C.mustn't D.oughtn't
[解析]mustn't 表示禁止，意为“千万不要”。
[答案]C
17.Holiday shopping ________ be a tiring experience. There are so many places to visit and choices to make.
A. can B. may
C. shall D. will
[解析]句意：假期购物可能是一段累人的经历。有许多地方要看，许多选择要做。can“可能”，语气较肯定;may“或许”，语气较弱;由语境可知，A项正确。
[答案]A
18.—Listen ! There is a knock on the door. Who ________ it be?
—It must be Jack. Just now I sent for him.
A. shall B. can
C. must D. might
[解析]句意：听!有敲门声。会是谁呢?—肯定是杰克。刚才我派人去请他了。can 表推测时，往往用于疑问句和否定句;must 表推测时，只用于肯定的陈述句;might“或许”，语气较弱;由语境可知，B项正确。
[答案]B
19.Hiking trips ________ sound exciting to most kids, but few realize they ________ be uncomfortable and even dangerous.
A. may; can B. must; should
C. would; should D. can; will
[解析]句意：远足旅行对大多数孩子来说或许听起来很令人兴奋，但很少有孩子意识到这些旅行可能会不舒服，甚至是危险的。由语境可知，两个空都表推测，指客观上的可能性，故A项正确。can“可能”;may“或许”，可能性较 can 弱。
[答案]A
20.—Where will you start your work after graduation?
—Mmm, it's not been decided yet. I ________ continue my study for a higher degree.
A. need B. must
C. would D. might
[解析]句意：—你毕业后到哪里开始工作?—还没决定呢。我可能会继续我的学业，拿一个高一点的学位。need“需要”，作情态动词用时只用于否定和疑问句中;must 表示肯定的推测;would“会;过去常常”;might“或许”;由前置语境 it's not decided yet 可知，应选 might。
[答案]D
