___ to line n 换成n号线 ___ station 换乘站 ground ___ 地面层 at the end of the ___ 在站台的尽头 on the ___ hand side 在右手侧 Which line ___ I take? 应该坐几号线? About ___ an hour. 半个小时 You should ___ ___ from Exit A. Please ___ the arrows in the passage. I would like to ___ some problems to the station master.