3. Because he was ill, he couldn't go to school.

4. It is useful to know English.

5. Practicing the piano takes Hoa thirty minutes a day.

6. Shall we go to the movie theater?

7. How much does your new bike cost?

8. Nguyen Tien Minh plays badmiton excellently.

9. There are four people in my family.

10. Of the three, Nam is tallest.

_____

1. Do people in your country still go to work by bicycle ?

2. This lesson is more difficult than that one.

3. Nhung can't play the piano and her sister cant' either.

4. It takes my father three months to learn how to speak English.

5. American students take part in different activities at recess.

6. How much does it cost to mail a local letter in Vietnam?

7. He is hungry so he has to find something to eat.

8. How about having dinner together at 7 pm?

9. Why did Hoa go to the dentist last week?

10. Nam is a good tennis player.

_____

1.D

2.D

3.B

4.C

5.D