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    all London taxis were black, but now you sometimes see other colours. A. At one time B. At a time C. From time to time D. At the same time 【查看更多】

     

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    _____ all London taxis were black, but now you sometimes see other colours．

    A． At one time                                     B． At a time

    C． From time to time                             D． At the same time

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    _____ all London taxis were black, but now you sometimes see other colours.

    　　  A. At one time   B. At a time   C. From time to time  D. At the same time

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