问题
选择题
---Must I water the flowers right now?
---No, you ________ . You may do it after supper.
A. mustn't B. needn't C. can't
答案
答案:B
题目分析: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。