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    28．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 【查看更多】

     

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    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

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    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

     

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