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I don't believe him. He be serious. [ ] A.can't B.needn't C.couldn't D.mustn't

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I don't believe him. He be serious. [ ] A.can't B.needn't C.couldn't D.mustn't

I don't believe him. He ________be serious.

[]

A.can't

B.needn't

C.couldn't

D.mustn't

试题答案

答案:A