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

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

科目 英语   题型 单选题   难度 较易

知识点： 宾语从句