4. write down what we should do (8 sentences) and what we mustn't do (3 sentences) to keep fit.

1. We should eat organic food to keep fit.
2. We should do the exwecises to keep fit.
3. We should walk more tp keep fit.
4. We should observe the rules pf personal hygiene.
5. We should sleep a lot to keep fit.
6. We should get up early to keep fit.
7. We should drink more water to keep fit.
8. We should play tennis to keep fit.

1. We mustn't drink alcohol to keep fit.
2. We mustn't smoke to keep fit.
3. We mustn't eat fast food to keep fit