题目内容
You must have watched that football match last night, __________?
A. must you??????? B. haven’t you????????? C. didn’t you????? D. aren’t you
【答案】
C
【解析】
试题分析：本题考察的是对“情态动词+have done”的反义疑问句，当“情态动词+have done”后面有过去时的时间状语的时候，要对一般过去时反问；如果没有过去时的时间状语，要对现在完成时反问。本句中有过去时的时间状语last night,而且句中是行为动词watch，所以使用助动词did进行反问。故C正确。
考点：考察反义疑问句
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