EX5: Make rules in our class with must/ mustn't

1. must

2. must

3. mustn't

4. mustn't

5. must

6. mustn't

EX6: Match the sentences in column A with the sentences in column B. Then write full sentences by using because

1. E

2. A. he brushes them three times a day

3. D. we want to have a healthy living

4. C. she is very kind and skillful

5. B. He is having a toothache

EX 7: Write the questions and answer Why..? and because:

1. Why is she worried- Because she has to see a dentist

2. Why is Ba scared?- because he hears the sound of the drill

3. Why does she feel calm? - because the dentist is very kind

4. Why does Lan feel better?- Because she had a dentist fix the tooth

5. Why is Nam happy? - Because he has his teeth healthy

6. Why do they play soccer well? - Because they practice it every day.

7. Why do Lan and Hoa do morning exercise every morning?- Because they want to have a healthy life

I. Underline the best answer

1. to measure

2. heavy

3. Can

4. wash

5. relieved

6. to return

7. knows - knows

8. What is your height

9. temperature

10. medical