2. Would you mind if I took some photographs?

3. It's not difficult to make this cake.

4. It's very important to keep the environment clean.

5. It's difficult to understand this question.

6. Ba is studying very hard so he won't fail in the exam.

7. The pan of fish has been pulled into the sink.

8. The poem was written by Clement Clark Moore in 1832.

9. English is spoken in the world.

10. Old car tires are recycled to make shoes and sandals.

11. Many bowls and dishes in the kitchen has been broken by the cat.

12. The young man said that he had to go to Cairo the next day.

13. Lien asked Hoa if she knew Hue citadel.

14. She asked if I was ready to go to Hue.

15. The tourists said that they liked that place.

16. John asked Nhi if Phong Nha Cave ws in Southern Vietnam.

17. Do you mind if I try on your shoes.

18. The boy reading the book is Ba

19. It is an attractive-flower-arranging contest.

20. He hasn't come here since two months ago.

31-32:

1. I am relieved as your mother is getting better now.

2. He is anxiously waiting for the test results.

3.Nhi decided to go along the beach before heading for the hotel.

5. Nhi asked Nga if she knew My Son.

6. Have you finished your homework yet, Ba?

7.The Le family was sleeping when the mailman came

8. I promise I won't play soccer at house.

9. The celebration will be held tomorrow.

10. They was playing tennis 10.30 yeterday morning.

11. The Eiffel Tower was designed Alexander Gustave Eiffel in 1889.

12. She showed me where to buy tickets

13. The car made in Japan is expensive.

14. The flowers wraped in yellow paper is two dollars.

15. The girls playing chess is Lan and Hoa.