You__________buy a gift, but you can if you want to.A．mustB．mustn"tC．have toD．do

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You__________buy a gift, but you can if you want to.

A．must

B．mustn"t

C．have to

D．don"t have to

答案

解析

略

举一反三

I_______ have watched that movie —it’ll give me horrible dreams.

A．shouldn’t

B．needn’t

C．couldn’t

D．mustn’t

题型：不详难度：| 查看答案

We——last night, but we went to the concert instead
A must have studied B might study
C should have studied D would study

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Just be patient .You__________expect the world to change so soon
A ca

n’t B needn’t C may not D will not

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We______________last night，but we went to the concert instead.

A．have studied	B．might study
C．should have studied	D．would study

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Doctors say that exercise is important for health,but it__________be regular exercise .

A．can

B．will

C．must

D．may

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