21. What does his mother do ?– She is a nurse.
22. Where do you live ? – At 13 Le Duan Street.
23. Why don’t you write your excercises ? – Because they are so difficult.
24. Who do you go to school with? - My best friend, Tuan.
25. How many foreign languages do you speak ? - Two.
26. How much are those fashionable hats ? – 100.000 dong.
27. How old is your grandmother? – She is 90 years old.
28. How far is it from your house to school ? – 5 kilometers.
29. How much time does it take you to school ? – 15 minutes.
30. Whose bag is that ? – It’s Lan’s bag.