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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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