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    Jeremy, who on his food, looked up at the mention of the word cash. A. has been concentrating B. has concentrated C. had been concentrating D. had concentrated 【查看更多】

     

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    Jeremy, who ________ on his food, looked up at the mention of the word “cash”．

    A．has been concentrating

    B．has concentrated

    C．had been concentrating

    D．had concentrated

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