从方框中选择适当的单词补全下列对话。

A: Welcome to my school.

B: Your school is so big. you have a playground?

A: Yes, we do.

B: that a computer room?

A: No, it isn't. It's the teachers' office.

B: is the computer room?

A: It's on the floor.

B: Can I go and have a look?

A: Sure. Let's