After driving all night we got to Amy’s place， that she was away. A. only to discover B.

After driving all night we got to Amy’s place， that she was away.
A. only to discover
B. only discovering
C. only discovered
D. only having discovered

(答案→)A. only to discover B. only discovering C. only discovered D. only having discovered解析：only doing sth 与 only to do sth 均可表示结果，其区别是：后接现在分词往往表示一种自然的合乎逻辑的结果，而后接不定式往往表示一种出乎意料的或令人失望的结果。又如：I arrived at the shop only to find I’d left all my money at home. 我到商店却发现钱全落在家了。

就是这个解释