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    33．-Sorry, Sir. I can’t answer this question. -Well, you are supposed this part of history. A．reading B．to be reading C．to have read D．having read 【查看更多】

     

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    － Sorry, Sir．I can’t answer this question．

    － Well, you are supposed ________ this part of history．

    [　　]

    A．reading

    B．to be reading

    C．to have read

    D．having read

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