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英语
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The room is very clean because it()by us
was kept
is clean
is cleaned
will be swept
说下原因谢谢了
人气：212 ℃ 时间：2019-12-29 18:02:28
解答
is cleaned .从前面的is可以判断是现在时,所以是is,由于by us可以知道是被动语态,所以是选一个动词的过去分词.
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