根据对话内容，在每个空白处填入一个适当的句子, 使对话完整、合乎情境。

A：Li Hua, is this a photo of your school?

B：Yes, it is.

A：?

B：Yes,our school is big.

A：?

B：There are seven buildings in our school.

A：?

B：The playground? It is in the middle of the school.

A：?

B：No, the library isn't on the left of the playground. It's on the right of the playground.

A：Is there a map of England on your classroom wall?   

B：. But there's a map of America.