题目内容

—Must I finish my homework at once?   
— No, you ______.
A. needn’t B. mustn’t C. won’t
A

试题分析：A. needn’t不必 B. mustn’t禁止  C. won’t将不会，must的否定回答一般借助于needn’t和don’t have to来构成。句意：我必须立刻完成作业吗？——不，你不必立刻完成，故选A.
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