I laughter at the sight of the funny actor.A. burst outB. burst intoC. broken intoD. beg

问题补充：

I laughter at the sight of the funny actor.

A. burst out

B. burst into

C. broken into

D. began with

答案：

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。