分类：教育/科学-外语学习-英语考试
问题：一道英语选择题Hesaidhecouldn'thelpbut__ 
He said he couldn't help but_____ when he heard the story.A laugh    B to laugh   laughing  D laughed请高手帮忙解答，谢谢！
回答：He said he couldn't help but_____ when he heard the story.
A laugh B to laugh C laughing D laughed
请高手帮忙解答，谢谢！


应该选 A
can't help doing sth
can't help but do sth