1. Trains to Oxford leave every hour in the morning.
2. This problem doesn't happen very often.
3.That ring is very expensive.
4. Where is your car?- It's at home. It isn't working at the moment.
5. I left the party when it started to rain.
6. When I was cooking the dinner, I heard a strange noise.
7. The two men were stopped by the police yesterday.
8. She offered to do the washing-up.
9. I will buy that camera if it doesn't cost too much.