她的演讲非常风趣，听众忍不住不时发出笑声。(cannot help)
【正确答案】正确答案：Her speech was so humorous that the audience couldn’t help laughing from time to time．
【答案解析】解析：(so…that…如此……以至于……。can’t help doing sth．忍不住做某事。)