The classroom is very clean now.It___(clean) by us just now.
The classroom is very clean now.It___(clean) by us just now.
请问一下这个空里面应该填cleaning还是cleaned啊?
请问一下这个空里面应该填cleaning还是cleaned啊?
英语人气：570 ℃时间：2020-03-29 15:01:11
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was cleand 被动语态加过去时
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