题目内容
You must have read about Mark Twain long ago, ____?
A. mustn't you B. haven't you C. didn't you D. needn't you
【答案】
C
【解析】
试题分析:考查反义疑问句。句中must have done 表示对过去的肯定推测,而且有明显的时间状语long ago。做反义疑问句时用助动词did,所以答案选C。
考点:考查反义疑问句
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