题目内容

【题目】I believe that she must have been at home last night, ________?

A. didn’t she B. wasn’t she C. mustn’t she D. needn’t she

【答案】B

【解析】考查反义疑问句。句意:我相信她昨晚一定是在家,不是吗? 如果主句谓语是think, believe, expect, suppose, imagine等引导的宾语从句,疑问部分与宾语从句相对应构成反意疑问句。宾语从句中must have been是对过去事实的推测,反问时按been的过去时反问,故选B

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