You must have seen the film last night, ______?

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问题 You must have seen the film last night, ______?

选项 A、didn’t you
B、mustn’t you
C、needn’t you
D、do you

答案A

解析 当陈述句部分的must表示“一定”、“想必”等推测意义时,疑问尾句不用mustn’t,而是根据陈述句部分的谓语动词来确定。如:He must have waited here for a long time,hasn’t he?中的陈述句相当于I’m sure he has waited...,所以反意疑问部分用hasn’t he。本题正确答案为A。
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