1.If they _____ to do this work, he might do it some other way.A. wereB. shouldC. willD.canA. should have sentB. were going to sendC. should be sendingD. should send3.Let's take a walk, ____?A. will weB. don't weC. do weD. shall we4.He was a good swimmer so he _____ swim to the river bank when the boat sank.A.couldB.mightC.shouldD.was able to5.I went to the doctor's yesterday, I had to wait for half an hour before he ____ see me.A.canB.mayC.mightD.could6.---- _____ this book be yours? ---- No, it ____ not be mine. It ____ be his.A. Can, must, mayB. May, might, mustC. Can, may, mustD. Must, can, may7."We didn't see him at the lecture yesterday. " "He _____ it." A. mustn't attendB. can't have attendedC. would have not attendedD. need have attendedA. can have missedB. may have missedC. can have lostD. may have lost9.Since the ground is white, it _____ last night.A. had snowedB. must have snowedC. must be snowingD. must have been snowing10.You must be fifty, ____?A. mustn't youB. needn't youC. aren't youD. mnyn't you11. You must have seen him off yesterday, _____?A. haven't youB. didn't youC. mustn't youD. needn't you12. ---- That must be a mistake. ---- No .it _____ be.A.can'tB.isn't able toC.canD.was able to13. He had known the matter before you told him, so you _____ have told it to him.A.mustn'tB.can'tC.needn'tD. shouldn't14.How ____ so?A. dare you to sayB. dare you sayC. do you dare sayD. dare to say15.You are their teacher. You _____ care of them.A. should to takeB. might to takeC. ought to takeD. need to take16.She is studying medical science now but she _____ a lawyer.A. used to beB. would beC.wereD.had been17. If you were in an English-speaking country, you, too, _____ English every day.A. will be used to speakB. will be used to speakingC. must be used to speakD. would be used to speaking18.I did not call to make my airline reservation (预订 ) but I _____.A. should have B, may haveC. must haveD. shall have19.As a girl, she _____ get up at six every day.A.wouldB.willC.mightD.should20.Don't you rember that we _____ to the cinema tonight?A. would goB. goC. are goingD.will be gone21.---- Shall I tell John about it? ---- No, you _____. I've told him already.A. needn'tB. wouldn'tC.mustn'tD.shouldn't22."Would you mind if I open the window?" "_____".A. I don't like itB. Yes .pleaseC. No, pleaseD. No. I'm sorry23. "Would you tell me something about the affair?" "_____".A. Yes .pleaseB. All rightC. Not at allD. I do24.M:____?T:I'd love to, but I'm afraid I have no time."T:It's very nice of you. But I'm sorry I have to go to a meeting.A. Do you have lunch out in a restaurantB. Shall I have you with me at my birthdayC. Did you go to see the filmD. Have you enjoyed yourself at the partyA. ought toB. ought to haveC.oughtD.have ought to26."Would you like to go out for a walk?" "Yes, ______. "A. I'd like toB. I'd likeC. I'll like toD. I would27. ____ you succeed !A.CanB.MayC.MustD.Will28. Did he need ____ then?A.leaveB.to leaveC.leavingD.left29.Do you think if he dares _____ in public.A. speakB. speakingC. to speakD. spoken30.He ____ eating American food since he came here.A. used toB. has been usedC. has been used toD. was used toA. may not, mustB. mustn't, mightC. shouldn't, couldD. can't, must32."____ you mind my opening the window?" "Not at all. "A. ShallB.ShouldC.WillD.Would33.1 didn't hear the phone. I _____ asleep.A. must beB. must have beenC. should have beenD. could have been34.You _____ me about it earlier, but you didn't.A. should have toldB. would have toldC. must have toldD. should tell35.The teacher told the students that they ____ keep silent in class all the time.A. ought to notB. ought not toC. ought not to haveD. can't36."May I go now?" "No, you ____. "A. mustn'tB. needn'tC.mightn'tD.won't37.You _____ do the exercise if you don't want to.A. may notB.can'tC.mustn'tD.needn't38. You _____ pay more attention to your spelling next time.A.wouldB.shouldC.willD.shall39.The girl _____ out alone at night.A. dare not goB. dare not to goC. dares not goD. does not dare go40.There ____ be a lot of small houses on both sides of the street.A. used toB. get used toC. wouldD. did use to。