19.16.Where does Li Ming's aunt live? A.In Yueyang. B.In Xiangtan. C.In Changsha. 17.How did Li Ming want to go to his aunt's home? A.On foot. B.By bus. C.By bike. 18.What time does the first bus leave? A.At 5:30. B.At 6:30. C.At 7:30. 19.Who telephoned the bus station? A.Li Ming. B.Li Ming's mother. C.Li Ming's aunt. 20.How many buses for Changsha came together? A.Only one. B.Two. C.Three.