题目内容

---Must I water the flowers right now?
---No, you ________ . You may do it after supper.
A. mustn't             B. needn't           C. can't
B

试题分析：句意：上句我必须马上浇花吗？下句不，你不必，你可以吃过晚饭在做。对于must 开头的的一般疑问句用needn't作否定回答。故选B。
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