A: Excuse me, do you know how to get to Xi’an North Railway Station?B: There is no direct bus. You’d better take the subway.A: Ok. _______________________________. （应该乘坐哪一趟地铁呢？）B: ___________________________________. （你先乘坐地铁一号线到北大街站，那是换乘站，然后换成二号线，到西安北客站。）A: Do you know where the nearest subway station is?B: It's over there in front of the supermarket.A: ______________________________.（到北客站大概要多长时间？）B: About half an hour.A: ______________________________.（从这里到那几站？）B: Nine stops.A: Oh, my god. I have no enough money on my card?B: Don’t worry. You can charge it at the subway.A: That’s great. Thank you very much.B: ________________________. （不客气。）