When he reached the final line,everyone laughing.
A. burst into
B. burst out
C. burst up
D. broke out
网友回答
A. burst into
(答案→)B. burst out
C. burst up
D. broke out
解析:短语辨析。A闯入,爆发出(后面常接名词的复数形式);B突然…起来;(后面常接doing)C崩溃,突然发怒;D(战争,火灾的)爆发;本题横线后面接了laughing,故选B。句意:当他到达终点线的时候,所有的人都大笑起来。