Question

【题目】--- Mom, must I finish my homework now?
--- No, you ______. You may have supper first.
A.mustn't
B.needn't
C.can't
D.couldn't

Answer 1

【答案】B
【解析】句意：-妈妈，我必须现在完成我的家庭作业吗？-不，你不必，你可以先吃晚饭。mustn't 禁止，不要；needn't不必；can't不能；couldn't过去不能。must的一般疑问句，否定回答应该用needn't，故选B。