1. They can be very expensive.
2. b) workmate (U.K.) / co-worker (U.S.)
3. Your suitcase may not arrive at your destination.
4. a) wear a suit.
5. c) stay in contact.
6. One of them may not work.
7. False. Fly during the day so that you don’t loose sleep.
8. b) get free air travel.

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