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    He when the UFO arrived. He didn’t wake until the UFO disappeared. A. slept B. was sleeping C. was doing homework D. was singing 【查看更多】

     

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    He ______when the UFO arrived. He didn’t wake until the UFO disappeared.

       A. slept   B. was sleeping  C. was doing homework    D. was singing

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     He ______when the UFO arrived. He didn’t wake until the UFO disappeared.

       A. slept             B. was sleeping         C. was doing homework D. was singing

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    He ______when the UFO arrived. He didn’t wake until the UFO disappeared.

       A. slept   B. was sleeping  C. was doing homework    D. was singing

     

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    He ______ when the UFO arrived. He didn't wake until the UFO disappeared.

    [     ]

    A. slept
    B. was sleeping
    C. was doing homework
    D. was singing

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    He ______when the UFO arrived. He didn’t wake until the UFO disappeared.

    A．slept

    B．was sleeping

    C．was doing homework

    D．was singing

     

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