单选题 All the tickets ______ out when we arrived.
A. had sold B. would wait C. have sold D. had been sold

【正确答案】 D
【答案解析】[解析] 根据时间状语when we arrived表示过去时间,在过去时间之前发生的动作且又由于句中由物做主语,因此应为过去完成时的被动语态。