This is a picture of a bedroom. I can see a bed, a desk, a light (灯) and some books. The light and the books are on the desk. The chair is behind（在……的后面）the desk. A photo of Jim's family is on the wall. Father, Mother and Jim are in the photo. But we can't see his cat. It's not in the photo.
A: What can you see in the picture?
B: I can see a bed, a desk, a light and some books.
A: Where are these things?
B：
A：
B: The light and some books.
A: Where is the chair?
B: It's behind the desk.
A：
B: It's a photo of Jim's family.
A: Who are they in the picture?
B：
A：Where is Jim's cat?
B：
