Here are the completed sentences using the correct forms of the verbs provided:

1. You should use suncream if you don’t **want** to get sunburn.
2. My parents **drink** vegetables because vegetables are good for their health.
3. She **avoids** fast food because it is harmful.
4. Everyone **should wear** a facemask or face shield to protect themselves from COVID-19.
5. We need **to sleep** 7 hours a day to have good health.
6. He often **wakes** up at 5 a.m. and **takes** exercises to keep fit.
7. You shouldn’t **drink** too much soft drink because it is not good for your health.
8. The doctor advises me to **go** on a diet to keep fit.
9. Thanh **pushes** up 100 times per day and he has a nice body.
10. Fast food and soft drink **are** not good for our health.

Note: In sentence 2, "drink" is used instead of "eat", assuming it refers to vegetable juice. Alternatively, "eat" could also be appropriate if we change it to "My parents **eat** vegetables..."