补全对话。

A. What is it? B. It's the Queen's house. C. Is this a park? D. It's a book about the UK. E. It's in London.

A: Amy, what's this?

B: Let's have a look.

A: OK.

B: It's Big Ben. It's very old.

A: And it's very tall.

B: Yes, it is. It's Hyde Park.

A: It's very beautiful. Where is it?

B: Look at that beautiful house.

A: Whose house is it?

B: It's Buckingham Palace.