题目内容
At the beginning of the class, the noise of desks could be heard outside the classroom.
A.being opened and closed B.to be opened and closed
C.opened and closed D.to open and close
A
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题目内容
At the beginning of the class, the noise of desks could be heard outside the classroom.
A.being opened and closed B.to be opened and closed
C.opened and closed D.to open and close
A