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    Walter offered us a lift when he was leaving, but our work, we turned down the offer. A. not finished B. not having finished C .not finishing D. having not finished 【查看更多】

     

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    Walter offered us a lift when he was leaving, but _____ our work, we turned down the offer.

    A. not finished                                 B. not having finished

    C. not finishing                                D. having not finished

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