11. Does your school have twenty classrooms ?
12. Mr Nam is Binh's father.
13. I go to school on foot every day.
14. The museum is in front of the hospital.
15. My father goes to bed at a quarter to eleven.
16. How does the hat cost?
17. What is Khai's favourite sport?
18. They are going to Hung temple by bike.
19. What about going camping this weekend?
20. He is a strong boy.