根据对话内容，从文后选择恰当的选项将对话补充完整。

A: Hello, Sam. You look so happy today. 

B:  56  My parents have a birthday party for her. 

A: That's great! How old is your sister?

B:  57  Do you want to come to the party? 

A: That's for sure. When is it?

B:  58  I want to buy a book about geography for my sister. 

A:  59   

B: Yes, geography is her favourite subject. 

A:  60  You can buy a book there. 

B: Great! Let's go.

A．She is fourteen.

B．It's at four this afternoon.

C．I know there is a bookstore next to our school.

D．Well, today is my sister's birthday.

E．Does she like geography?