He couldn’t help .The news was so .A. smiling excitedB. to smile excitingC. smiling e

问题补充：

He couldn’t help .The news was so .

A. smiling, excited

B. to smile, exciting

C. smiling, exciting

D. smiled, excited

答案：

A. smiling, excited

B. to smile, exciting

(答案→)C. smiling, exciting

D. smiled, excited

解析：couldn’t help doing表示情不自禁的做某事，和事物连用用exciting，故本题选C。