The window which hasn't been cleaned for at least 3 weeks requires ______
A.to clean B.cleaning C.cleaned D.being cleaned
说明原因
人气：147 ℃ 时间：2020-02-04 22:19:01
解答
B cleaning
require/need/want 加动名词,可以主动表被动
例如：
Your hair wants cutting. 你的头发该理了.
The floor requires washing.地板需要冲洗.
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