—Does your uncle still smoke?

—He       given it up. It’s two years ever since he      .

A．can’t have; smoked

B．may have; smoked

C．should have; has smoked

D．should have; didn’t smoke

关于法律事件的定义，下列叙述正确的是()。

A．以当事人意志为转移的法律行为

B．以当事人意志为转移的法律事实

C．不以当事人意志为转移的法律行为

D．不以当事人意志为转移的法律事实