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    精英家教网 > 高中英语 > 题目详情
    In the past, ice             food.

    A. used to keep
    B. used to be used for keeping
    C. was used to keeping
    D. used to be used to keeping

    B
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    科目：高中英语 来源：期中题 题型：单选题

    In the past, ice             food, but now we have refrigerators.
    [     ]

    A. used to keep
    B. used to be used for keeping
    C. was used to keeping
    D. used to be used to keeping

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