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    This problem is said three times. A. to have been discussed B. to have discussed C. having been discussed D. to have been talked about [解析]选A.此处使用的是不定式的完成被动式. 表示“曾经被讨论过三次 . 【查看更多】

     

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    This problem is said _____ three times.

    A. to have been talked            B. to have discussed  

    C. having been discussed          D. to have been talked about

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    This problem is said _____ three times.  
    [     ]
    A. to have been talked      
    B. to have discussed  
    C. having been discussed    
    D. to have been talked about

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    This problem is said _____ three times at the meeting. However, they haven’t arrived at a conclusion now.

    A. to have discussed         B. to have been discussed

     having been discussed     D. having discussed

     

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    This problem is said_____ three times at the meeting. However, they haven’t arrived at a conclusion now.

    A．to have discussed

    B．to have been discussed

    C．having been discussed

    D．having discussed

     

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    This problem is said _____ three times at the meeting. However, they haven’t arrived at a conclusion now.

    A. to have discussed         B. to have been discussed

     having been discussed     D. having discussed

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