问题
选择题
On hearing the news that her son had won the game, she _____ laughter.
A．burst out
B．burst into
C．burst with
D．burst upon
答案
答案：B
考察固定结构。Burst into laughter="burst" out laughing突然笑起来。结合句意可知B正确。句意：一听见她儿子赢得比赛的消息，她突然就笑起来了。