in the traffic jam she failed to catch the train which mader her upset. A. Catching B.

问题补充：

in the traffic jam, she failed to catch the train, which mader her upset.

A. Catching

B. Having caught

C. To catch

D. Caught

答案：

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。