1.
nicer nicest.
shorter shortest.
younger youngest.
newer newest.
older oldest.
more careful. the most careful.
more modern. the most modern.
more popular. the most popular.
more dangerous. the most dangerous.
more expensive. the most expensive.
less. least.
worse. worst.
better. best.
more. most.
5.
1. warmer.
2. hottest.
3. colder.
4. oldest.
5. more expensive.
6. easiest.
7. most boring.
8. longer.
9. longest.
10. most beautiful.
11. best.
12. cheaper.
13. taller.
14. tallest.
15. younger.
16. most beautiful.