问题
选择题
--Did you listen to the speech?
--- No, we ______ it. But we had a lot of traffic on our way.
A．could have attended
B．must have attended
C．could attend
D．shouldn't have attended
答案
答案：A
该题考查的是虚拟语气，表示“本能……”是与过去事实相反，要用could+have done形式。