Ответ:

1. She rarely drives to work.

2. Our take-off was delayed by three hours.

3. If you don't go faster, we'll miss the boat.

4. The earliest time the doctor can see you is at two o'clock.

5. We will soon be in Moscow.

6. We're taking the car so we can go around as we like.

7. Unless you drive more carefully, we'll have a crash.

8. We have to get off the train at the next station.