You must have seen the film last night, ( ) you?

You must have seen the film last night, ( ) you?
A、haven't
B、mustn't
C、didn't
D、hadn't
【正确答案】：C
【题目解析】：must have done 是对过去发生事情的肯定推测，昨天晚上你一定去看电影了，不是吗这里是反义疑问句，反义疑问句要did 的否定形式来表示