— Look! Somebody _____the sofa.
— Well, it wasn't me. I didn't do it.
A．is cleaningB．was cleaning
C．has cleanedD．had cleaned
C

試題分析：句意：— 瞧，有人已經(jīng)清理沙發(fā)了。— 嗯，那個人不是我。我沒做。A.是現(xiàn)在進行時；B. 是過去進行時；D.是過去完成時，強調(diào)過去的過去。答語表明 clean的動作不是進行時，排除Ａ，Ｂ；Ｄ沒有一個過去的時間做對比，排除。根據(jù)句意用現(xiàn)在完成時強調(diào)結(jié)果更佳。故選Ｃ。
考點: 考查動詞時態(tài)的用法。
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