The key answer of exercise 1

a)

b)

1. Did you arrange to meet friends? If you didn’t, we can meet later.
2. She called me because she wanted to have a chat.
3. Please book a table for us at the Blue Fin Restaurant tonight.
4. There's been a problem and I can't attend, so l'm calling to cancel my reservation.
5. Don't forget to check the train times before you leave for the station.
6. I'd like to come to the 4.30 performance, not the 6.30, and I'm calling to change my ticket.
7. The manager of Triad Books is on the phone. He wants to talk business.