问题
选择题
The Chinese enjoy _________ fireworks when some good things happen (发生) in their families.
A．set off
B．letting off
C．set up
D．setting up
答案
答案：B
题目分析：句意：中国人当家里有些好的事情发生，喜欢放鞭炮。set off 动身，使爆炸；set up建立。enjoy doing sth喜欢做某事。故排除AC两项。结合句意，表示放鞭炮，使鞭炮爆炸，故选B。