1smaller-the smallest,younger-the youngest, thinner-the thinnest, thicker-the thickest, taller-the tallest, finer-the finest, newer-the newest, easier-the easiest, busier-the busiest, dirtier-the dirtiest, more famous-the famous, more beautiful-the most beautiful, more difficult-the most difficult, more comfortable-the most comfortable, more expensive-the most expensive,better-the best, worse-the worst, less-the least,more -the most.
2 1)big-bigger, 2) hot-hotter 3)good-better 4)dirty-dirtier 5)tall-taller
3 1)funnier2)lazier3)busier4)worse5)fatter6)smaller
4 1) the biggest 2) the largest 3)the shortest 4)the laziest 5) the best