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    -When this kind of computer ? -Last year. A. did; use B. was; used C. is; used D. are; used 【查看更多】

     

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    — When _________ this kind of computer ________?
    — Last year.
    [     ]
    A. did; use  
    B. was; used  
    C. is; used  
    D. are; used

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