二 补全对话 小贵、小遵和小黔正在观看体育中心举办的比赛，他们一边观看一边议论着。请你根据图片内容和文字提示，尝试补全对话吧！

Xiaozun: There are many people here. 1. ?
Xiaogui: They are 2. .
Xiaoqian: They are so cool. I want to play basketball here, too.
Xiaozun: Can I drink water here?
Xiaogui: Yes, of course. But you should 3. .
Xiaozun: I know. Look! There is a sign on the wall!

1. What are they doing
2. playing basketball
3. keep clean

三 对话解谜 精彩的篮球比赛结束了，观众席上遗落了不少观众的随身物品，工作人员 David 正向小贵和小黔询问这些物品的失主信息。阅读对话，在物品下面的横线上写上物品主人的名字。
David: Whose water bottle is this?
Xiaoqian: It’s mine.
David: Are these sunglasses yours?
Xiaoqian: No, they aren’t. They are my friend Xiaogui’s.
David: Whose caps are they?
Xiaoqian & Xiaogui: They’re ours.
David: Is this your umbrella?
Xiaogui: Yes, it is.

1. Xiaoqian
2. Xiaogui
3. Xiaoqian & Xiaogui
4. Xiaogui