题目内容

—Shall I help you prepare for the dinner?
—No, you ________. Everything has been ready.
A. can’t            B. mustn’t         C. needn’t
C
   
试题分析：句意：我帮助你准备晚饭好吗？不你不必，一切都准备好了。A. can’t不能 B. mustn’t 千万别表示禁止 C. needn’t不必，根据句意，故选C。
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