1.---Listen! Lily is singing. --That ____ be Lily. She is in the library.
A.mustn't B.wouldn't C.can't D.needn't
2.---Must I return the books to the library before Wednesday?
---No, you _____. Tomorrow is OK.
A.can't B.mustn't C.may not D.needn't
3.---Must I hand in my homework today? ---No, you _____.
A.mustn't B.wouldn't C.needn't D.can't
4.You have already tried your best, so you ____ worry about the matter.
A.can't B.needn't C.mustn't D.couldn't
5.---Who is the girlstanding over there?
---Well, if you ____ know , her name is Joe
A.must B.may C.can D.shall
6.---What should we do first if we want to develop our village?
---A lot of roads ____. I think.
A.must build B.have to build C.must be builtD.have built
7."Where is my umbrella?" It's fine today. You ____ take an umbrella with you."
A.can't B.needn't C.mustn't D.shouldn't
8.I like the party so much. But I ____ go home.
A.have to B.mustn't C.may D.can't
9.---Must I get ready at seven o'clock tomorrow? --No, you ____.
A.mustn't B.needn't C.do not D.don't have
10.---I cant' stop playing computer games.
---For you health ,I'm afraid you ____.
A.can B.may
C.must D.have to
11.---____ your friend play the guitar? --- Yes,he can, but he can't play it well.
A.must B.can C.should D.need
12.---Ben, don't drive too fast. You ____ hit the others' cars.
A.may B.must C.have to D.need
13.---Will you please stay here for the party?
---Sorry, I ____ . I'll have to go to an important meeting.
A.mustn't B.needn't C.can'tD.won't
14.---Must I wait for you here now?
---No you _____. You may be back in half an hour.
A.don't have to B.mustn't C.can't D.shouldn't
15.---May I go out and play tennis, Dad?
---Yes, but you ____ finish your homework first.
A.can B.could C.may D.must
16.---I was told to be here before eight
---Oh you_____ I'm sorry for not telling you that we have changed the plan.
A.mustB.can't C.may D.needn't
17.Although you did well this time, you ____ look down on others.
A.had betterB.ought to C.shouldn't D.wouldn't
18.---Could you please pass the book on the shelf to me? ---____
A.you are welcome B.No,I couldn't C.Certainly. Here you are. D.Yes, I could
19.---Whose volleyball is this?
---It ____ be Carla's. She never plays volleyball. She dislike it.
A.can'tB.may not C.must D.needn't
20.You ____ stop your car when the office light is red
A.must B.may C.can D.needn't
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