----Must I finish that work today?
----No, you _____. You may finish it in three days.
A．mustn’tB．needn’tC．Shouldn’tD．couldn’t
B

試題分析：句意：我必須今天完成那項工作嗎？不，你不必。你可以在三天之后完成。must引導(dǎo)的一般疑問句肯定回答用Yes,you must.否定回答用No,you needn’t.故選B。
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