20. Li Lei takes the s　　　　 　to school every morning.

19. -When do you want to go for a picnic, on Sunday or Saturday?

-I am free both days. It all d　　　　 on you.

18. On the Internet, we can know the things in other p　　　 　of the world.

17. Traveling by a　　　 is very expensive.

16. A small n　　　 　of students take cars to school.

15. It's about two k________ from here to there.

14. There are s　　　 　minutes in an hour.

13. I often get up at h________ past six in the morning.

12. Beijing is in the n________ of China.

11. They are waiting for you at the bus s______.