听材料,回答问题。 1. How many persons are going to see Betty off at the airport? [ ] A. Only one. B. Two. C. Three. 2. Where will Betty stay in Guangzhou? [ ] A. In a hotel. B. In her brother's home. C. In her friend's home. 3. How will Peter go to Xi'an with his parents? [ ] A. By train. B. By plane. C. By coach.