11. didn't - stayed
12. has learned
13. Did - walk - didn't walk
14. Does - watch - do
19. He lives with his grandma on Ly Thoung Kiet street.
20. My father is the tallest person in my family.
21. He lives very far from his family.
22. Who did you play badminton with yesterday?
23. The Nile River is the longest river in the world.
24. Ba is shorter than Nam.
25. Nam likes watching television.
26. The coffee doesn't have any sugar.
