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专题一 时态和语态综合练（一）
一、单项填空
1．A brilliant idea occurred to him，________ to his research in the lab．
A．while devoting B．while devoting himself
C．while he was devoted D．while devoted
一、单项填空
1．A brilliant idea occurred to him，________ to his research in the lab．
A．while devoting B．while devoting himself
C．while he was devoted D．while devoted
