【题目】—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
在线课程【答案】C
【解析】试题分析：考查时态：句意：---看！有人把沙发清洗干净了。---哦，不是我，我没干。根据答语 it wasn't me 可知 清洗沙发是过去做的事，并对现在造成了影响。沙发清洗过了，所以用现在完成时。选C。