1. He always drives carefully in order not to cause accidents..
2. I get up early in the morning in order to go to school on time..
3. In order not to get cold, she wore warm clothes.
4. They save money in order to buy a house in the city.
5. We turned off the lights in order not to waste electricity.
6. It’s (high) time the government did something about air pollution.
7. It’s (high) time he got back to work.
8. You ought to see the doctor now.
9. I would rather go shopping than do housework.
10. Quang likes staying at home to study than going out for a walk.