2. When Lan wad small, she used to cry a lot

=> Lan often cried a lot when she was small.

3. I walk to school in 20 minutes every day

=> It takes me 20 minutes every day to walk to school.

4. last week, she spent two days tidying the room

=> It took her two days to tidy the room.

5. I  started learning English in 200

=> I have learnt English since 200

It began raining haft an hour ago

=> it have been raining for half an hour.

6. William is too fat to wear this jean

William is so fat that he can't wear this jean.

7. Her car is more comfortable than mine. 

=> Her car isn't as uncomfortable as mine.

8. I have 5 book, he has 10.

=> I have fewer books than him

9. I can drink 2 can of bear, he can drink 3 cans

=> He can drink more cans of beer than me

10. My favourite subject is English

=> I like learning English.

11. He enjoy studying Maths

=> He is in frond of studying Maths.

12. Let’s go our for drink

=> Why don't we go out for drink.

13. How much does her dress cost? 

=> How much is her dress cost?

14. what was the price of these shoes? 

=> How much did these shoes cost?

15. Why do not ask your teacher’s help” she ask me

=> She advised me to ask my teacher's help.

16. She is very poor. She cannot buy a book

=> She is so poor to buy a book.

17. he is better than his father

=> This father is not as good as him.

18. I regret not meeting him earlier

=> I wish I had met him earlier.

19. He fail the exam because he did not study hard.

=> If he had studied hard, he wouldn't have failed the exam.

20. I have never met a more beautiful woman than her

=> She is the most beautiful woman I have ever met.

21. the last time I met her was when I was in Hue city.

=> I haven’t met her again since 6 was in Hue city.

22. She said “ Nam , I will give your mother a gift” 

=> She promised to give Nam's mother a gift.

23. I finish the test in one hour.

=> It took me one hour to finish the test.

24. “Remember to lock the door” Tims’s father said 

=> Tim’s father reminded him to lock the door.

25. the man tried to escape but the police stopped him. 

=> The police prevented the man from escape.

26. Tuan is my boyfriend, his father is a doctor

=> Tuan whose father is a doctor is my boyfriend.

27. The girl is a singer. We met her at the party.

=> The girl we met at the party is a singer.

28. The bananas are on the table. George bought them.

=> The bananas George bought are on the table.

29. I have to learn new words. They are very difficult.

=> The new words I have to learn are very difficult.

30. it is not necessary for you to do the exercise today. 

=> You do not need to do the exercise today.