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You must have seen him off yesterday, __...

You must have seen him off yesterday, _________?

A. haven't you    B. didn't you

C. mustn't you    D. needn't you

 

B 【解析】 考查反义疑问句。句意:你昨天一定送他走了,是吗? 当must have done表示对过去的情况进行推测(一般句中有明确的过去时间状语),本题中yesterday是提示,问句要根据陈述部分谓语的情况用“didn't+主语”或“wasn't/weren't+主语”,故选B。  
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