口语运用。从方框中选出最佳选项完成下面的对话。
(共5小题；每小题1分，满分5分）
A: Hello, Bill.    
B: I am going to travel with my family.
A:   
B: I am not sure now. Could you give me some suggestions?
A: What about Hainan? It's a good place to relax yourself.
B:      Have you ever been there?
A:     But I still want to take a vacation there. There is so much to do and see in Hainan.
B: Really?  
A: I'm sure you'll enjoy being there.