Miss Li: Draw your bedroom.
Jiamin:  My bedroom has four walls.
Miss Li: What is that, Jiamin?
Jiamin:  It's my bedroom.
Miss Li: OK. Where's the door?
Jiamin:  Here it is. 
Miss Li: Do you have a window in your bedroom?
Jiamin:  Oh yes, of course. This is it. 
Miss Li: And do you have a bed? 
Jiamin:  Yes, I do. 
Miss Li: And a wardrobe(衣柜)?
Jiamin:  Yes. And my bedroom has a ceiling(天花板)!