--- 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 题目和参考答案——青夏教育精英家教网—

题目内容

--- 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

解析:

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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