问题
选择题
Look, so many people are running out of the station. I wonder what ________.
A．is happened
B．was happening
C．is happening
D．had happened
答案
答案：C
题目分析：句意：看，这么多人正从车站里跑出来。我想知道发生了什么事。根据Look, so many people are running out of the station.可知此处人们正从车站跑出来，表示正在发生的事，故选C。