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    The boy English on the radio when I his door. A. learned- was opening B. was learning- opened C. learned- opened D. is learning- open 【查看更多】

     

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    The boy ______ English on the radio when I ______ his door.

    [    ]

    　　A.learned, was opening    B.was learning, opened

    　　C.learned, opened　　　　 D.is learning, open

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