All the colour TV sets ____ out before we arrived .

A. are sold            
B. have been sold    
C. will be sold          
D. had been sold
D
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科目：高中英語 來源：同步題 題型：單選題

All the colour TV sets ____ out before we arrived .
[     ]
A. are sold            
B. have been sold    
C. will be sold          
D. had been sold

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