Question

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

Answer 1

B

试题分析：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。
点评：时态的考查要放在上下文语境中进行，要根据句子所表达的含义来判断。本题中长城是过去所建设的，故使用过去时。