题目内容

— Could I clean the bedroom for you?

— No, thanks. I      it myself.

  A. cleaned     B. have cleaned     C. was cleaning     D. had cleaned

答案:B

解析:动词的时态。句子意思是:我能为你打扫卧室吗?不用了,我已经自己打扫过了。已经打扫过对现在的影响是不用扫了,这是现在完成时态的用法,所以选择答案B.

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