Do you know over there?
A. what happens
B. what was happened
C. what happened
D. what did happen
网友回答
A. what happens
B. what was happened
(答案→)C. what happened
D. what did happen
解析：英语宾语从句中一般为陈述语序。句意；你知道那边发生了什么事情吗？结合语境可知宾语从句描述的是刚才发生的动作，故用一般过去时态。Happen一般不用做被动语态，故选C。