选择各句的应答语。

⑴Is that your office?                    A. Thank you.

⑵What's in the bag?                    B. No, we don't.

⑶Look at my classroom.              C. No, it isn't.

⑷This way, please.                       D. It's so big.

⑸Do you have a music room?      E. A pencil box and some books.