—Catherine, I have cleaned the room for you.
—Thanks. You _____it. I could manage it myself.
A.needn’t doB.needn’t have done
C.mustn’t doD.shouldn’t have done
B。
句子的語(yǔ)境是:“我自己能做”,所以“你本不必做的”。選A還是B呢?根據(jù)前面一句中的 have cleaned 可知,動(dòng)作已經(jīng)發(fā)生,所以此處談?wù)摰氖且粋(gè)過(guò)去情況,故選 needn’t have done。
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