Question

--Do you know________ , Mike ?
--On May 12^th , 2008

1. A.
   when the earthquake took place in Wenchuan
2. B.
   when the earthquake has taken place in Wenchuan
3. C.
   when did the earthquake take place in Wenchuan
4. D.
   when the earthquake will take place in Wenchuan

Answer 1

A
本题中know后跟的是一个宾语从句，用正常顺序，故本题不选C，本题描述的过去的时间，要用过去时，故本题只能选A。