11. We don't see our grandparents very often because they live so far away.

12. ''Why don't you decorate your room with wallpaper?" Mai said to Hoa.

13. Traveling in spaceship sounds interesting to me.

14. They have to rebuild many houses because of the earthquake.

15. We couldn't get to work because it rained heavily.

16. 'Let's use fewer plastic bags" he said.

17. We last saw our grandfather five months ago.

18. They'll have to change the date of the meeting again.

19. Would you like me to finish the work tonight ?

20. Nam is the tallest man in the class.