The noise of the desks (A) could be heard in the next classroom.
A.being opend anf closed B.opend anf closed C.having been opend anf closed D.to be opend anf closed
为什么选A?选B不行?
人气：294 ℃ 时间：2020-05-19 01:18:29
解答
A
being opened and closed 被动进行
因为正在被开关,所以有噪音
opened and closed,被动完成
所以没噪音
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