选择题：Haven’t you met each other at ___ party? ---Yes, b

题目内容：
Haven’t you met each other at ___ party? ---Yes, but I can’t remember whether it is__C__ Christmas when we were in college(本题5.0分)
A、 a ; the
B、 the; a
C、 a; a
D、 a; /
参考答案：