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问题: 高考英语单选

At the beginning of class, the noise of desks _______ could be heard outside the classrooms.
A.opened and closed B.to be opened and closed
C.being opened and closed D. to open and close
解释一下为什么不选A。

解答:

因为这个句子要去强调一个进行时态,即:桌子正被开和关发出的声音。这与我们汉语日常用法有区别。