单选题 ______ enough money, we began to carry out our traveling plan.
A. Collecting B. To collect
C. Having collected D. Collected

【正确答案】 C
【答案解析】从句的逻辑主语与主句一致，可用现在分词短语作时间状语；从句的动词在主句动词前发生，则从句用现在完成时态。