题目

题型：不详难度：来源：

（河北唐山一中09高三调研，11）— Do you still remember when we went to Chongqing?
—I can’t remember now but ______ sometime last summer?

A．could it be

B．might it be

C．could it have been

D．might it have been

答案

C

解析

could have done对过去的动作可能性的判断。