—Look! Somebody the sofa.
—Well, it wasn’t me. I didn’t do it.
A. is cleaning
B. has cleaned
C. was cleaning
D. had cleaned
网友回答
A. is cleaning
(答案→)B. has cleaned
C. was cleaning
D. had cleaned
解析：考查时态：句意：看，有人把沙发擦干净了。--哦，不是我，我没做。强调的是现在的结果，用现在完成时。选B。