in the traffic jam, she failed to catch the train, which mader her upset.
A. Catching
B. Having caught
C. To catch
D. Caught
网友回答
A. Catching
B. Having caught
C. To catch
(答案→)D. Caught
解析：句意：遇到了交通堵塞，她没能赶上火车，这使她很难过。这里需要非谓语动词做状语，因为“遇上…”be caught in, 所以用过去分词做状语，选D。