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— Must we finish all the exercises today?
— No, you ________.You can finish them within two days.
A.mustn’tB.needn’t toC.needn’tD.don’t have
C

试题分析:句意:我们必须今天完成所有的练习吗?must的否定回答不用mustn’t,一般要借助于needn’t或者don’t have to。通过分析只有选项符合要求,故选C。
点评:must的用法比较特殊,其基本含义是必须,一定。其否定形式表示禁止的意思。故其否定回答一般要借助于needn’t或者don’t have to来完成,记住即可。
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