Question

【题目】--- How clean the bedroom is!

--- Yes, I am sure that someone it.

A. cleans B. cleaned C. has cleaned D. had cleaned

Answer 1

【答案】C

【解析】句意：——那间卧室多么干净啊！——是的，我确信某人已经打扫它了。根据How clean the bedroom is!可知现在卧室是干净的，因此是已经打扫过的，对现在造成了影响，故用现在完成时，故选C。