the distance was too far and the time was short, we decided to fly there instead of going there by train.
A. Discovering
B. To discover
C. To have discovered
D. Discovered
网友回答
(答案→)A. Discovering
B. To discover
C. To have discovered
D. Discovered
解析：考查分词做状语。Discover与主语we之间构成主动关系，故使用现在分词做状语。句意：当我们发现距离太远，时间太远的时候，我们觉得坐飞机去那儿，而不是坐火车。故A正确。