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    24．Had I known that air conditioners cause so much pollution , I one. A．would never have bought B．would haven’t bought C．must never have bought D．must haven’t bought 【查看更多】

     

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    Had I known that air conditioners cause so much pollution , I _______ one.

    A．would never have bought                    B．would haven’t bought

    C．must never have bought               D．must haven’t bought

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    _____ that air conditioners cause so much pollution, I would never have bought one.

    A．Had I known

    B．I had known

    C．Were I to know

    D．Did I know

     

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