根据对话内容,在空白处填入一个适当的句子,使对话完整、正确。 A: Li Na, the summer vocation is coming. What are your plans? B: I am going on a visit to Wuhan with my parents by train. A: (1)________? B: No, I haven't. I'll do it at once. C: Hello! Enshi Railway Station. (2)________? B: I'd like to book some tickets to Wuhan at 8:00a.m on July 1st. (3)________? C: We have tickets at ¥145 for the hard sleeper and¥232 for the soft sleeper. Which kind do you want? B: (4)________. C: All right. Three soft sleeper tickets. Please pay for the tickets before 6:00a.m. (5)________? B: Sure. I'm Li Na and my telephone number is 8410555. Thank you. C: You're welcome.