—Guess what! I have got A for my term paper.
—Great! You        read widely and put a lot of work into it.
A．mustB．shouldC．must haveD．should have
C
“你猜到了嗎？我的論文得了A”“太好了，你一定進(jìn)行了大量閱讀而且投入了許多工作。” 根據(jù)語(yǔ)境I have got A for my term paper.可知“已經(jīng)拿到了好成績(jī)”是過(guò)去的事情，對(duì)過(guò)去的推測(cè)用must have done。故選C
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