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We have been acquainted each other for a long time. [ ]A.over B. for C. by D. wi

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We have been acquainted each other for a long time. [ ]A.over B. for C. by D. wi

We have been acquainted __________each other for a long time.    [     ]A.over          
B. for          
C. by            
D. with

试题答案

D