Sure! Here are the completed sentences from 15 to 34:

15. The noise in the city kept Hoa **awake** at night. (Wake)
16. Mr. Tan has a very **painful** tooth. (Pain)
17. Then, Thanh **heated** a pan and stirred the beef. (Heat)
18. Sugar is not an **unhealthy** food because we need it to live. (Health)
19. Catching the common cold is **unpleasant** for everybody. (Please)
20. Don't worry! Your cold will last for a few days and then **disappear**. (Appear)
21. My sister has a big **collection** of stamps. (Collect)
22. My favorite subject at school is physical **education**. (Educate)
23. The most popular **activity** at recess is talking. (Act)
24. My friend and I write to each other **regularly**. (Regular)
25. I love **wonderful** music. (Wonder)
26. I like to play the guitar **musically**. (Music)
27. There is too much homework to play than my friends do. (Little)
28. There should be more **exercises** to keep people healthy. (Health)
29. In the room, the football match was **exciting**. (Excite)
30. The restaurant looks **different** from the last one. (Differ)
31. Gia Nguyên is one of the most famous **actors** of Vietnam. Many people love her. (Act)
32. There are many badminton **competitions** nowadays. (Compete)
33. Mr. Pike didn't go to work yesterday because of his **illness**. (Ill)
34. My company is considering **portable** computers for our employees. (Employ)

Feel free to copy and use these answers!