根据上下文选择合适的句子把对话补充完整
A. No, it isn't B. Forty C. Yes, we do D. Is this the art room E. It's so big |
A: Welcome to our school! This is my classroom.
B: . How many students are there in your class?
A: .
B: Is that the music room?
A: . It's the computer room.
B:?
A: Yes, it is.
B: Do you have a library?
A:. It's on the second floor. This way, please.