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    ( ) Our knowledge of computers growing all the time. A. be B. is C. are D. were 【查看更多】

     

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    Our knowledge of computers ____ growing all the time.
    [     ]
    A. be            
    B. is        
    C. are          
    D. were

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    Our knowledge of computers _____ growing all the time.
    [     ]
    A. be
    B. is
    C. are
    D. were

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