单选题 _____in the first round of the competition, our team took the earliest flight back.
A. Being knocked out B. Having been knocked out
C. We were knocked out D. We had been knocked out

【正确答案】 B
【答案解析】分词的现在完成式作原因状语，可以代替具有现在完成时的从句。分词完成式结构所表示的动作必须发生在主句的动作之前。to knock out：(在体育比赛中)淘汰。