问题补充:
—Must I finish the exercise this afternoon?
—Yes, you , but you finish it now.
A. must, mustn’t
B. must , don’t have to
C. may, needn’t
D. may , mustn’t
答案:
A. must, mustn’t
(答案→)B. must , don’t have to
C. may, needn’t
D. may , mustn’t
解析:考查情景交际。“我今天下午必须完成练习吗?”“是的,你必须,但是你现在不比。”用must提问,肯定回答还用must,否定回答用needn’t或don’t have to。mustn’t“禁止”,否定回答不用mustn’t,排除A。故选B。