填写句子完成对话。(10分) A: 小题1:______________________________________________________________? B: I’m visiting my grandmother for vacation. A: 小题2:______________________________________________________________? B: She lives in Tianjin. A: 小题3:_____________________________________________________________? B: It takes about six hours to get there by train. A: 小题4:______________________________________________________________? B: I’m leaving on Friday. A: How long are you staying there? B: About two weeks. A: Have a good time. B: 小题5:___________________________________________.