【題目】—Must I walk the dog now, mom?

—No, you _____.You can do it after supper.

A. mustn’tB. needn’tC. can’t

【答案】B

【解析】

句意:——媽媽,現(xiàn)在我必須遛狗嗎?——不,你不必,你可以在晚飯后做。A. mustn’t禁止;B. needn’t不必;C. can’t不能。對(duì)于must開頭的一般疑問句,做否定回答用needn’t來回答。根據(jù)題意,故選B。

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