1. They opened a new mall in our city last month.

2.Lan hasn't finished her work yet.

3. Many foreigners visit Vietnam every Year.

4. We ought to water the plants every day.

5. The fire destroyed many houses in Hanoi lastweek.

6. Nguyen Du wrote Kieu's story.

7. I use my computer every day.

8. My parents take us to visit our relatives at Tet.

9. They can see many beautiful flowers at the spring flowers market.

10. Our teacher corrects our homework.

11. The children usually drink milk and milk tea.

12. Our school will organize soccer matches next month.

13. Mr Nam has to pay the bill before Monday.

14. They throw away million of emty cans every Year.

15. He doesn't prepare his lessons well before class.

16. You must write your test carefully.

17. All students should clean the classroom before Tet.

18. People grow rice in these friends.

19. Nam is going to repair his bike.

20. Mr Thang taught us English last Year.

21. They cut down many trees to make paper.

22. Pollution from factory pollutes many lakes and rivers.

23. My mother has just made a new dress for me.

24. Lan helped her mother last Sunday.

25. They are using the computer in the computer room.

26. They'll build a new school soom.

27. Hoa is going to invite Lan to her birthday party.

28. You musn't use this machine.

29.We check our lessons carefully.

30. They recycled tires to make sandals a long time age.