P: Excuse me. Can I ask something about high-speed train? C: . P: How often does high-speed train go to Nanjing? C: . P: How long does it take? C: . P: Thanks a lot. C: . 1. That’s all right. 2. It goes there every 10 minutes. 3. Yes, please go ahead. 4. About an hour and twenty minutes. A. B. C. D.