1 shorter; the shortest
longer; the longest
smaller; the smallest
taller; the tallest
stronger; the strongest
weaker; the weakest
warmer; the warmest
colder; the coldest
cleaner; the cleanest
richer; the richest
poorer; the poorest
higher; the highest
lower; the lowest
newer; the newest;
fewer; the fewest
nicer; the nicest
larger; the largest
bigger; the biggest
hotter; the hottest
sadder; the saddest
thinner; the thinnest
happier; the happiest
funnier; the funniest
heavier; the heaviest
busier; the busiest
better; the best
worse; the worst
more; the most
more; the most
less; the least
older; oldest
farther; the farthest
more interesting; the most interesting
more difficult; the most difficult
more expensive; the most expensive
more beautiful; the most beautiful
more talented; the most talented
2.
1. larger
2. younger
3. heavier
4. higher
5. better
6. better
7. worse
8. worse
9. worse
10. more
11. more
12. more
13. more
14. fewer
15. less
16. less
17. farther
18. older; older
19. more interesting
20. more talented
21. more difficult
22. less expensive
3.
`1. much cleaner
2. a bit better
3. much busier
4. a little shorter
5. a bit worse
6. a lot more
7. a little more
8. far less
9. a bit fewer
10. a little more interesting
11. much more
12. far more
4.
1. 2 kilometres longer
2. 5 kilograms heavier
3. 10 centimetres taller
4. 20 centimetres shorter
5. 4 years older
6. 3 years younger
7. 2 years older
8. 5 centimetres longer
9. 5 times larger
10. 3 times more expensive
11. 2 times more interesting
5.
1. the happiest
2. the saddest
3. the best
4. the nicest
5. the longest
6. the heaviest
7. the worst
8. the funniest
9. the worst
10. the richest
11. the most difficult
12. the most beautiful
13. the largest
14. the best