18. She turned down the TV in oder not to disturb her roommate.
19. They're going to a restaurant in order to celebrate their wedding anniversary.
20. I ran all the way to school so as not to be late for the first lesson.
21. He didn't tell the truth so as not to disappoint her.
22. She hid the present in order to give me a surprise.
23. She's going on a diet so as to to put on weight.
24. I'm learning very hard so as not to fail my final exams.
25. I set my alarm clock in order to get up at five a.m