题目内容

根据题意，用适当的情态动词或助动词填空

　　－Must we hand in our homework today?

　　－No, you don't ________.

答案：have to
解析：

在回答由must引起的一般疑问句时，肯定回答要用must，否定回答要用needn't或don't have to．


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