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    ( ).--- Why do you know so much about old things? --- Because I in a museum of natural history. A. used to work B. used to working C. was used to work D. use to work 【查看更多】

     

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    －Why do you know so much about old things?

    －Because I ________ in a museum of natural history．

    [　　]
    A．

    used to work

    B．

    used to working

    C．

    was used to working

    D．

    use to work

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