He couldn’t help .The news was so .
A. smiling, excited
B. to smile, exciting
C. smiling, exciting
D. smiled, excited
网友回答
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。