Our knowledge of computers _____ growing all the time.

A. be
B. is
C. are
D. were
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科目：初中英語 來源：同步題 題型：單選題

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

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科目：初中英語 來源：同步題 題型：單選題

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

查看答案和解析>>


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