He ran all the way to the station only the train had already left.A. findB. to findC. fin

问题补充：

He ran all the way to the station only the train had already left.

A. find

B. to find

C. finding

D. to have found

答案：

A. find

(答案→)B. to find

C. finding

D. to have found

解析：句意：他一路跑向车站，结果发现火车已经开走了。根据动作的先后判断，应是先发生ran ，又发生find 这个动作，故排除D；因为句子已经有谓语动词不可能缺少动词，故排除A；doing做结果状语表示自然而然地结果；only to do表示意想不到的结果，根据句意故选B。