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    22． we went to see him, he his research work. A．The last time; devoted to B．Whenever; was busy to do C．For the first time; was lost in D．Each time; was deep in 【查看更多】

     

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    _________ we went to see him, he _________ his research work.

    A．The last time; devoted to                          B．Whenever; was busy to do

    C．For the first time; was lost in                D．Each time; was deep in

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