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    12．Before going abroad.he devoted all the time he could his spoken English. A．to improve B．to improving C．improve D．improving 答案 B 【查看更多】

     

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    Before going abroad，he devoted all the time he could ________ his spoken English.

    A．to improve 　　　　　　　　　　　　B．to improving

    C．improve 　　　　　　　　　　　　　D．improving

     

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