为下列问句选择相对应的答语。
⑴Where is the teachers' office? A. Wow! So beautiful!
⑵Is this the playground? B. It's on the second floor.
⑶Is this the library? C. Yes, it is.
⑷Look! That's the garden. D. Forty students.
⑸How many students are there in your class? E. No, it isn't. The library is next to the garden.