问题补充:
Having arrived at the railway station, .
A. it was found that the train had left
B. the train had left
C. the train was found left
D. he found that the train had left
答案:
A. it was found that the train had left
B. the train had left
C. the train was found left
(答案→)D. he found that the train had left
解析:考查分词作状语。题中已经用现在分词作状语,故其逻辑主语必须为人,只有D选项符合。