企业的市场行为分为市场竞争行为和( )。A．市场垄断行为 B．市场结构行为 C．市

根据对话内容，从方框内的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Brian: Hi, Cindy. 小题1:
Cindy; Hi, Brian.  It is nice to sec you and somany old classmates.
Brian: So it is. 小题2:
Cindy: You're right. It's really a long time.
Brian: Did you see the old photos on the wall?
Cindy: I sure did.小题3:
Brian: But those are some great memories.
Cindy: Hey!小题4:
Brian. Yes, it is. I remember he used to stay upall night studying.
Cindy: 小题5:
Brian: Yes. He was the only one left in the classwhen he woke up.
Cindy: That was really funny.

A. What happened? B. Long time no see! C. Who took these photos? D. Isn't dial John over there? E. We looked so funny in them. F. I can't believe it's been ten years. G. And then he would fall asleep in