Complete the dialogue with proper words.补全对话。
Betty: Hello, Sally .
Sally: Oh, Betty! Nice 26 see you again. How's it going 27 you ?
Betty: Great! I came back from Paris just two days ago.
Sally: Pari s? My god. It's one of my favorite cities.
Betty: I 28 it very much. It's really a beauti ful city.
Sally: What 29 you go there for? Business ?
Betty: No, I just went there 30 vacation.
Sally: It must 31 a wonderful vacation.
