问题补充:
Do you know when the Great Wall ?
A. was come into being
B. came into being
C. had come into being
D. had been come into being
答案:
A. was come into being
(答案→)B. came into being
C. had come into being
D. had been come into being
解析:考查时态。句意:你知道长城是什么时候形成的吗?长城的形成是过去发生的事情,所以使用过去时。Come into being形成,没有被动语态。故B正确。