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    - What’s the matter with you? - the window, my finger was cat unexpectedly. A. Cleaning B. To clean C. While cleaning D. While I was cleaning 【查看更多】

     

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    — What’s the matter with you?
    — _____ the window, my finger was cat unexpectedly.
    A. Cleaning      B. To clean      C. While cleaning     D. While I was cleaning

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