阅读对话并选择正确答案。
Liu Tao: What's the time now, Yang Ling?
Yang Ling: It's four thirty. It's time to go home.
Liu Tao: It's raining(下雨).Where is my umbrella?
Yang Ling:Look!There's a red umbrella under the desk.
Liu Tao:That isn't my umbrella.
Yang Ling:There are four umbrellas near the blackboard. Which one is yours（你的），Liu Tao?
Liu Tao:The blue one. Thank you, Yang Ling.
Yang Ling:Shall we go home together？
Liu Tao:Great!Let's go.
