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    After 15 years in the USA, he was finally decided to American citizenship. A. concentrate on B. apply for C. look out for D. appeal to 【查看更多】

     

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    After 15 years in the USA, he was finally decided to ________ American citizenship．

    [　　]
    A．

    concentrate on

    B．

    apply for

    C．

    look out for

    D．

    appeal to

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