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.