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At the begining of class the noise of desk__could be heard o

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At the begining of class the noise of desk__could be heard outside the classroom.
A.opened and closed B.to be opened and closed C.being opened and closed D.to open and close答案是C我想选A
At the begining of class the noise of desk__could be heard o
open 有两个词性,动词,开 ,被动语态形式opened,形容词,open, 开着的
close两个词性,动词,关,被动语态形式closed(同时也是形容词,关着的),形容词,close,亲密的,进的
A选项,and连接了不同的成分,是不可以的. desk与open和close形成被动语态,be+动词过去分词.并且,动词现在分词形式做伴随状语,所以选C