–Do you know Mike ? On May 12th .A. when the earthquake took place in Wenchuan

问题补充：

–Do you know , Mike ?

--On May 12th , .

A. when the earthquake took place in Wenchuan

B. when the earthquake has taken place in Wenchuan

C. when did the earthquake take place in Wenchuan

D. when the earthquake will take place in Wenchuan

答案：

(答案→)A. when the earthquake took place in Wenchuan

B. when the earthquake has taken place in Wenchuan

C. when did the earthquake take place in Wenchuan

D. when the earthquake will take place in Wenchuan

解析：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。