题目内容
19．-Must I finish my homework right now？-No，you ．（ ）
| A． | needn't | B． | may not | C． | mustn't | D． | can't |
分析 --我现在必须完成我的作业吗？
--不，你不必．
解答 答案：A．can't不可能；mustn't不可以；may not可能不；needn't不必．根据Must，可知这里是以must开头的一般疑问句，对于must引导的一般疑问句，肯定回答用must，否定回答用needn't或don't have to来回答，故选A．
点评 本题考查了情态动词的用法．解答时注意对于must引导的一般疑问句，肯定回答用must，否定回答用needn't或don't have to来回答．
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