— Look! Somebody the sofa.
— Well, it wasn't me. I didn't do it.
A. is cleaning
B. was cleaning
C. has cleaned
D. had cleaned
网友回答
A. is cleaning
B. was cleaning
(答案→)C. has cleaned
D. had cleaned
解析：句意：— 瞧，有人已经清理沙发了。— 嗯，那个人不是我。我没做。A.是现在进行时；B. 是过去进行时；D.是过去完成时，强调过去的过去。答语表明 clean的动作不是进行时，排除Ａ，Ｂ；Ｄ没有一个过去的时间做对比，排除。根据句意用现在完成时强调结果更佳。故选Ｃ。
考点: 考查动词时态的用法。