3. She wore warm clothes in order not to get cold.
4. Nam is studying very hard so as to keep pace with his classmates
5. We turned out the lights in order not to waste electricity
6.  He moved to the front row so as to hear the speaker better.
7. I wish to have enough money in order to buy a new house.
8. Thanh and Nga are going to Australia so as to learn English
9. We hurried to school in order not to be late
10.They got up very early so as to get to the top of the hill before sunrise.
11.I bought a new screwdriver  in order to repair my bicycle.
12. Jim finally went to the dentist so as to get some relief from his toothache 
13. They save money in order to buy a house in the city.
Mình quên thêm phần gạch chéo để phân ra 2 cách, bạn tự thêm nhé! ^^