---Yourofficeisverydirty.---Iknow.It______forthreedays.A.hasn’t’cleanedB.

发布时间:2020-08-06 20:51:51

---Your office is very dirty.---I know.It ______ for three days.A.hasn’t’ cleanedB.didn’t cleanC.hasn’t been cleanedD.wasn’t cleaned

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C解析办公室是被打扫的,而且到说话时已有三天没打扫了,故用现在完成时的被动语态形式。
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