Iwalkedslowlythroughthemarket,wherepeople

問題詳情：

I walked slowly through the market, where people _____ all kinds of fruits and vegetables. I studied the prices carefully and bought what I needed.

 A. sell                B. were selling         C. had sold             D. have sold   

【回答】

B

知識點：過去進行時及其被動式

題型：選擇題