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

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(答案→)A. excited, exciting
B. exciting, excited
C. excited, excited
D. exciting, exciting
解析：此题重点考查exciting和excited之间的区别。在形式上两者都是分词，都可以做定语。前者是现在分词，表示主动意义常用来修饰物；后者是过去分词，表示被动意义常用来修饰人。