—How clean the bedroom is !—Yes. I'm sure that someone______it.[ ]A. cleansB. cleanedC. has cleanedD. had cleaned-初中英语-魔方格

◎ 题干

—How clean the bedroom is !
—Yes. I'm sure that someone______it.

[ ]

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

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◎ 解析

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◎ 知识点

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