阅读下面对话，从方框内7个选项中选择5个恰当的句子完成此对话，并将其番号填入题前括号内。
A. How can you say so?
B. How do you like China?]
C. This is Bill.
D. Please have a seat here.
E. Do you come from Australia?
F. Where are you from?
G. Why do you say so?
A: Hi, Mike!
B: Hi, Sue. Welcome to my birthday party.       Bill is my good friend.
A: Hi, Bill. Nice to meet you.     
C: I’m from Australia.
A: Oh, really? It’s summer in your hometown. Yes?
C: That’s right. It’s hot in Australia now. But I like it very much.
A:       
C: Because I like swimming.
A:      
C: China is great.
A:        
C: Thank you.