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    Peter into the back room when nobody A. slipped, was looking B. slipped, had looked C. had slipped, looked D. was slipping, looked 【查看更多】

     

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    Peter ______ into the back room when nobody ________

    A. slipped, was looking B. slipped, had looked

    C. had slipped, looked　 D. was slipping, looked

     

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    Peter ______ into the back room when nobody ________

    A. slipped, was looking B. slipped, had looked

    C. had slipped, looked D. was slipping, looked

     

    查看答案和解析>>


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