I laughter at the sight of the funny actor.
A. burst out
B. burst into
C. broken into
D. began with
网友回答
A. burst out
(答案→)B. burst into
C. broken into
D. began with
解析：句意：我一看到滑稽的演员就笑了，burst out爆发；burst out+doing；burst into爆发；burst into+名词；break into闯入； begin with以……开始。因为横线后面是名词“laughter”，故选B。