阅读理解, 判断正误。
A:Good morning, Su Hai.
B:Good morning, Nancy.
A:What's this?
B:It's a green umbrella.
A:Is this your umbrella?
B:No, it isn't. My umbrella is red. I think it's Su Yang's.
A:Where's your sister?
B:She's in the computer room.
A:May I have this umbrella for her?
B:Sure. Here you are.