根据对话内容，从所给的七个选项中选出可以填入空白处的最佳选项，使对话内容完整。(有两项为多余选项)
A: Hi, Katy speaking.
B: Hi, Katy. It’ s Betty.   
A: Yes, I’ d love to.   
B: It’s about animals in danger, and what the government is doing to protect them;
A:    Do we need to buy tickets in advance(提前)?
B: I’m not sure.
A: Well,     .
B: At five o’ clock. So let’ s meet half an hour earlier to see if there are still tickets left.
A: OK.          
B: see you.  

A. See you then. B. Enjoy yourself. C. What is it about? D. Do you like Beijing Zoo? E. Oh, that rounds interesting. F. What time does the film start? G. Would you like to see a film tonight?