The windows of the room---(clean) once a week,so they are a

问题描述:

The windows of the room___(clean) once a week,so they are a little dirty
1个回答 分类:英语 2014-11-14

问题解答:

我来补答
are cleaned
这里要用被动语态,意思是:这间房间的窗户一星期打扫一次,所以有一点点脏.
 
 
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