My cat is smaller than Peter's.
My brother is taller than my dad.
His dog is cleaner than mine.
That tree is shorter than this one.
The ice is colder than the water in the sea right now
1. I'm
2. Do
3. don't
4. Are
5. I'm
6. do, do
7. I'm
8. are
9. I'm
10. do
11. is
12.Are
13. I'm
14. do
15. don't
16. do
17. Are
18. I'm
19.don't
20. do
1) Small - smaller - the smallest, warm - warmer - the warmest, cold - colder - the coldest, long - longer - the longest, short - shorter - the shortest, nice - nicer - the nicest, big - bigger - the biggest;
2) bad - worse - worst, good - better - the best;
3) interesting - more interesting - the most interesting, beautiful - more beautiful - the most beautiful.
<h3>horizontal bar!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!</h3>