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1.—Are you in a hurry？
—No， in fact I’ve got plenty of time. I ___ wait.
A.must B.need C.may D.should
2.—Someone is knocking at the door. ___ it be Venis？
—No， it ___ be her； she left for New York this morning.
A.Can； mustn’t B.Might； can’t
C.May； doesn’t D.Can； can’t
3.He didn’t agree with me at first， but I ___ persuade him to sign the agreement later.
A.could B.might C.should D.was able to
4.—Is there a movie on in the cinema tonight？
—There___ be. I will phone the cinema and find it out.
A.might B.should C.can D.could
5.You ___ be careful when you cross here — the traffic lights aren’t working.
A.can B.ought to C.might D.may
6.You ___ out last night. I called you several times， but nobody answered.
A.must have been B.must be
C.might have been D.could be
7.You ___ fail to pass the entrance examination if you don’t study harder.
A.shall B.could C.must D.should
8.When I was studying at Beijing University， I ___ take a walk along the lake every evening.
A.will B.would C.could D.shall
9.The party turned out to be a failure. I would rather ___ it.
A.not have attended B.not attend
C.not to attend D.not to have attended
10.Sir， you ___ be sitting in this seat. It is for women or children only.
A.can’t B.oughtn’t to
C.won’t D.needn’t
11.—Shall I tell Li Ming about the matter？
—No， you ___ . He has known about it already.
A.oughtn’t to B.needn’t
C.shouldn’t D.mustn’t
12.—Must I take a bus？
—No， you ___ . You can walk there.
A.must not B.don’t
C.don’t have to D.had better not to
13.—Why do you make me do so？
—I am sorry that you ___ do such a thing.
A.would B.can C.should D.may
14.—Will you stay for lunch？
—Sorry， I ___ . My brother is coming to see me.
A.mustn’t B.can’t C.needn’t D.won’t
15.What would have happened ___ ， as far as the riverbank？
A.if Bob has walked farther
B.if Bob should walk farther
C.had Bob walked farther
D.should Bob walk farther
16.Oh， Jane， you’ve broken another glass. You ought ___ when you washed it.
A.be careful B.to care
C.have cared D.to have been careful
17.It’s high time we ___ to the theater.
A.will go B.shall go C.are going to D.went
18.—Could I use your telephone？
—Yes， of course you ___ .
A.could B.will C.can D.might
19.It’s strange that they ___ nothing about this matter.
A.should know B.would know
C.had known D.knew
20.—Do you still remember the day when we went to the Great Wall？
—I can’t remember it well， but ___ sometime last autumn？
A.might it be B.could it have been
C.could it be D.must it have been
21.—I can’t get through to the general manager’s office anyhow.
—The line is busy. Someone ___ the telephone.
A.must use B.uses
C.must have been using D.must be using
22.He suggests we ___ to the cinema at once， otherwise we will be late.
A.must go B.go C.will go D.would go
23.If only he ___ me yesterday!
A.had seen B.would see C.should see D.saw
24.If you ___ wait a moment， I’ll go and find our manager.
A.can B.should C.will D.must
25.—It is rather cold here. Shall we light a fire？
—No， we ___ because things are easy to catch fire.
A.won’t B.can’t
C.mustn’t D.needn’t
26.If I ___ you， I ___ more attention to English idioms and phrases.
A.was； shall pay B.am； will pay
C.would be； would pay D.were； would pay
27.—Would you have told him the answer had it been possible？
—I would have， but I ___ so busy then.
A.had been B.were C.was D.would be
28.—Can children swim in this pool？
—Yes. However， at no time ___ they do so by themselves.
A.dare B.should
C.need D.could
29.Kunming is called“Spring City”，but it ___ snow in winter.
A.shall B.can C.must D.might
30.—What’s the matter with you？
—Oh， I’m not feeling well in the stomach. I ___ so much fried fish just now.
A.shouldn’t eat B.mustn’t have eaten
C.shouldn’t have eaten D.mustn’t eat
31.—You look so upset. What’s wrong with you？
—The door ___ . Can you help me？
A.won’t open B.won’t be opened
C.can’t open D.can’t be opened
32.—Mum，I climbed to get the Teddy Bear from the top of the shelf.
—My goodness！You ___ yourself. You mustn’t do that next time.
A.must have hurt B.should have hurt
C.may have hurt D.can have hurt
33.Children under 12 years of age in that country ___ be under adult supervision when he is in a public library.
A.must B.may C.can D.need
34.“The interest ___ be divided into five parts， according to the agreement made by both sides，” declared the judge.
A.may B.should C.must D.shall
35.—I don’t mind telling you what I know.
—You ___ . I’m not asking you for it.
A.mustn’t B.may not C.can’t D.needn’t
36.—Mum，I’ve been studying English since 8 o’clock. ___ I go out and play with Tom for a while？
—No， I’m afraid not. Besides， it’s raining outside now.
A.Can’t B.Wouldn’t
C.Dare not D.Won’t
37.—Who is the girl standing over there？
—Well， if you ___ know， her name is Mabel.
A.may B.can C.must D shall
38.The driver has drunk too much wine and dangerous things ___ happen at any time.
A.should B.can C.must D.need
39.We ___ booked. Look， this restaurant is almost empty.
A.must have B.can’t have
C.should have D.needn’t have
40.Listen! The fire engine is roaring. There ___ be a fire somewhere.
A.should B.must C.will D.ought to
【答案及部分解析】 1～5 CDDAB 6～10 AABAB 11～15 BCCBC 16～20 DDCAB 21～25 DBACC 26～30 DCBBC 31～35 ACADD 36～40 ACADB
1. may表示“可以”。
2. can用在疑问句和否定句中，表示可能性的推测。can’t表示“不可能”。
3. 情态动词can和be able to都可表示能力。当表示“过去成功地做了某事”时，常用was（were） able to。
4. 由下文的I will phone the cinema and find it out可知此处应用might。may或might用在肯定句中，表示可能性的推测。
5. ought to表示劝告。
6. 题意为“我昨天晚上打了几次电话都没有人接，你一定是出去了”。must have done常用来表示对过去发生情况的肯定推测。
7. shall用于第二人称或第三人称，表示说话者的意愿，有命令、警告、威胁、强制、允诺和决心之意。此题用shall，表示“警告”。
8. 情态动词would可以表示过去经常性或习惯性的动作。与used to相比，would不含有“现在已无此习惯”的意义。
9. 题意为“那次聚会以失败告终，我宁愿没参加”。would rather （not）have done表示的是过去发生的情况。
10.由题意可知，此处应用oughtn’t to，表示“不应该”。
11.由he has known about it already可知，此处应用needn’t，表示“没有必要”。
12. don’t have to表示“不必”。
13. should常用在形容词sorry， anxious， happy， delighted等后接的that从句中，表示“竟，会”等意义。
15.had Bob walked farther相当于if Bob had walked farther。在虚拟条件状语从句中，省略if时要把had， should， were等提到句首。
16. ought to have done表示“过去本来应该做某事而事实上并没有做到”。
17. “It’s（high或about） time”后所接从句时，从句谓语动词常用过去式。
18. 问句中情态动词could表示委婉客气。
19. 题意为“他们竟然对此事一无所知，真令人奇怪”。“It’s strange， possible...+that从句”的句型中，从句谓语常用“should+动词原形”。
20. can（could） have done表示对过去发生情况的可能性推测，常用于否定句或疑问句中。
21. must be doing表示对现在正发生情况的肯定推测。
22. suggest， order， demand， request等表示建议或命令等的动词后接宾语从句，从句谓语常用“should（常省略）+动词原形”。
23. if only表示“但愿”。如果表示现在的愿望，句中谓语动词常用过去式；如果表示将来的愿望，句中谓语动词常用“would（could）+动词原形”；如果表示过去的愿望，句中谓语动词常用“had+过去分词”。
24. will表示“愿意”。
25. mustn’t表示“禁止”。
26. 表示与现在的事实相反，从句用一般过去时，主句谓语常用“would，could，should，might+动词原形”。
27. had it been possible相当于if it had been possible。but分句是描述当时的事实，故用一般过去时态。
28. at no time（在任何时候都不）位于句首时，句子应用部分倒装语序。should表示“应该”。
29. 此处用can表示“一时之可能”。
31. The door won’t open. 这门打不开。will表示“功能”，可译为“能，行”。又如：Each classroom will seat 60 students. 每间教室能容纳60名学生。
32. may（might） have done表示对过去发生情况的可能性推测，常用于肯定句中。
33. 题意为：“在那个国家12岁以下的儿童在公共图书馆时必须（must）有成年人监护。”
34. 由judge（法官）一词可断定，此处有强制、命令的语气，故填shall。
36. 此处句意为：“难道我不能（can’t）出去和汤姆玩一会儿吗？”
38. should表示“很可能”。
39. needn’t have done表示“本来不需要做某事而事实上已经做了”。
40. must be表示对现在发生情况的肯定推测。
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