25. --- 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

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詳解 (共 1 筆)

#1202216
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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