1. Being a doctor is very demanding. ..., it is a job in which there is no room for mistakes.

2.Many people feel nervous about flying, and worry about the possibility of an accident.
..., according to statistics, flying is actually safer than walking down the street.

3. Exercising helps us to keep fit. ..., it can be lots of fun.

4.Everyone was depressed ... the bad weather.

5.I couldn’t phone you ... I hadn’t got your phone number.

6.Driving to work can be convenient. ..., finding a place to park can be a problem.

7. Living in a foreign country can be very difficult. ... , one can often feel lonely and homesick.

8. Going on holiday is a great way to relax. ... , taking short trips at the weekend can also be enjoyable.

9. Cities are noisy. ..., the countryside is quiet.

10. It’s a difficult race. ..., about 1,000 runners participate every year.