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    30．The prices up all the time and no one knows when it will become stable. A．had gone B．have been going C．have gone D．had been going 【查看更多】

     

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    The prices _________ up all the time and no one knows when it will become stable.
    [     ]
    A. had gone    
    B. have been going  
    C. have gone    
    D. had been going

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    The prices _____ up all the time and no one knows when it will become stable.

    [     ]

    A. had gone
    B. have been going
    C. have gone
    D. had been going

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    The prices ____________ up all the time and no one knows when it will become stable.

    A．had gone            B．have been going  C．have gone       D．had been going

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