--- Guess what! I have got A for my term paper.

--- Guess what! I have got A for my term paper.
--- Great! You ______ read widely and put a lot of work into it.
A．must B．should C．must have D．should have
澹之兮 1年前 已收到1个回答 举报
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husp2005 幼苗

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C

情态动词表推测的用法。说话人听到对方说 “I have got A for my term paper”，据此来推断对方一定是读了好多书，花费了大量的心血。 “must have+过去分词”表示对过去发生事情较有把握的推测；“should have+过去分词”则表示过去应该做，但实际上没有，与题意不符。

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