Решение:
Заполним пропуски в тексте, опираясь на контекст:
- It's not easy to keep fit but I know what to do. I should 'look' after my body.
- I shouldn't hang around at the shops every day.
- I should go to a gym or take up a sport.
- I should take up 'energy' drinks - they aren't good for you.
- I saw a newspaper headline. It said 'Chocolate is good for you!' I checked out the article and I found out some excellent news.
Ответ: 1. look; 2. around; 3. up; 4. take; 5. out, found.