-----Guess what! I’ve passed my oral English test and got A.
----- congratulations. You ____ practiced a lot.
A. must have   B. should have     C. must         D. should
A
考察情態(tài)動(dòng)詞用法。Must have done是對(duì)過(guò)去所發(fā)生情況的肯定推測(cè)，意為：一定做了…;should have done本應(yīng)該做某事，實(shí)際上卻沒(méi)有做；根據(jù)上下文可知A正確。句意：—猜猜看！我通過(guò)了口語(yǔ)考試，并得了一個(gè)A�！ＹR你！你一定做了大量的練習(xí)。
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