1. He is taller than his sister.
2. She is shorter than her friend.
3. The river is longer than the bridge.
4. John is older than his brother.
5. Lisa is younger than her cousin.
6. Mark is richer than his neighbor.
7. Sarah is poorer than her classmates.
8. Her house is cleaner than her neighbor's.
9. The tree is taller than the fence.
10. The cat is shorter than the dog.
11. The road is longer than expected.
12. Tom is older than his classmates.
13. Emma is younger than her siblings.
14. James is richer than his colleagues.
15. Maria is poorer than her friends.
16. His car is cleaner than mine.
17. The building is taller than the surrounding buildings.
18. The plant is shorter than the tree.
19. The journey is longer than anticipated.