题目内容
At the beginning of class,the noise of desks 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
C
本题考查非谓语动词作定语。过去分词作定语表完成、被动;不定式作定语表将来;现在分词作定语表示正在进行。本题题意开始上课时,在教室外面就能听到开关课桌的声音。由句意可知表示开关课桌的动作正在进行,因此用现在分词作定语。
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