选出正确的应答语。

⑴Where is the art room ?             A. Yes, it is.

⑵Do you a music room ?              B. It's a new computer.

⑶Is that the teacher's office?          C. Forty-five.

⑷What's on the teacher's desk?        D. It's on the first floor.

⑸How many students are there?       E. Yes, I do.