She knows a lot about the film. She must have seen it before, ?must she B. mustn’t she C.

发布时间：2020-08-16 17:26:33

She knows a lot about the film. She must have seen it before,      ?
must she            B. mustn’t she     C. has she      D. hasn’t she

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解析：考查反义疑问句.对已发生的过去情况的推测，若陈述句谓语部分有“must have done”，而且有表示过去的时间状语，问句部分用didn’t；若没有表示过去的时间状语，问句部分用haven’t或hasn’t,she为第三人称单数,故选D.
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