-Look! Somebody the sofa.-Well it wasnt me. I didnt do it.A. is cleaningB. was

问题补充：

---- Look! Somebody the sofa.

---- Well, it wasn me. I didn do it.

A. is cleaning

B. was cleaning

C. has cleaned

D. cleaned

答案：

A. is cleaning

B. was cleaning

(答案→)C. has cleaned

D. cleaned

解析：句意：看，有人已经打扫了沙发。——哦，不是我。我不会做的。结合语境可知上文描述的是现在已经完成的动作，故用现在完成时态。选C。