1.---Listen!Lily is singing.--That ____ be Lily.She is in th

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 girl standing 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 built D.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't D.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.must B.can't C.may D.needn't
17.Although you did well this time,you ____ look down on others.
A.had better B.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't B.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

1.C 2.D 3.C 4.B 5.B 6.C 7.B 8.A 9.B 10.C 11.B 12.A 13.C 14.A 15.D 16.D 17.C
18.C 19.A 20.A
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