1) А: Hi, Doug. Sorry I can't see you tonight!
B: What happened? I was really worried about you!
2) A: I just saw a bus crash into a telephone pole.
B: Have you called an ambulance?
A: Yes, I called them on my mobile, then I ran to help.
B: How many people are there in the bus?
A: About forty people altogether.
B: Is anybody injured?
Yes, some of them are.