___ Exercise 2. Fill in the blanks with suitable words in the box.

allergy

toothache

suffer

worse

vegetables

tired

bad

flu

sick

and

1. Some people have a very _________ habit in littering in public.

2. People who live in dusty areas often _________ from diseases.

3. Julia has a headache, and she feels _________.

4. I have an _________, so I choose food and drink very carefully.

5. You should spend less time playing computer games, or your eyes will be _________.

6. Tom feels _________, but he doesn’t go to bed early.

7. Trung eats too many sweets so he has a terrible _________.

8. To prevent the _________, we should keep our hands clean and our feet warm.

9. Fresh _________ promote health.