How does it come about that you were caught by the police?是什么从句,_英语解答

How does it come about that you were caught by the police?是什么从句,

人气：198 ℃　时间：2020-01-09 09:51:59

解答

主语从句
it是形式主语,that you were...是真正主语
你被警察抓,这事怎么发生的呢?