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试题详情及答案解析
The windows of classroom _____ up every week.
A.is cleanedB.was cleaned
C.were cleanedD.are cleaned
答案:D
试题分析: 句意:教室里的窗户每天都被擦。此题考查被动语态主语+be+动词的过去分词,根据句意,故选D。
考点:考查被动语态。