1. Newspapers are ________ the racks ________ the middle.

2. She takes care ________ her family.

3. ________ physics, we learn ________ how things work.

4. She often brings them ________school.

5. We enjoy all ________ our classes.

6. Math books are ________ the shelves ________the left.

7. Can you send me a photo ________ your family?

8. It takes 18 hours to get ________ Hanoi ________ coach.

9. He works ________ a factory.

10. Tell me more ________ your family.

11. She works ________ a local supermarket.

12. Those books ________ the back ________ the libraries are ________ English.

13. We write ________ each other twice a week.

14. She spends most ________ the time _______ the couch ________ front ________ the TV.

15. ________ history, we study past and present events________ Vietnam and________ the world.

16. Thanks ________your letter.

17. What do you usually do ________ school?

18. He is the president ________ our club.

19. She’ll have a party ________ her birthday.

20. Are you tired ________ watching TV?