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    ---They are discussing what to do for the disabled. --- is necessary to provide them with more positions. A. That B. This C. It D. There 【查看更多】

     

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    —They are discussing what to do for the disabled. 
    — _______ is necessary to provide them with more positions.
    [     ]
    A. That
    B. This
    C. It
    D. There

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