They were when they heard the news.A. excited excitingB. exciting excited C. excited

问题补充：

They were when they heard the news.

A. excited, exciting

B. exciting, excited

C. excited, excited

D. exciting, exciting

答案：

(答案→)A. excited, exciting

B. exciting, excited

C. excited, excited

D. exciting, exciting

解析：句意：他们听到这个令人兴奋的消息都很兴奋。Excited意为“感到兴奋的”，用来描述人的感受；exciting意为“令人兴奋的”，用来描述事物的性质；故选A。