Happy - happier - the happiest young - younger - the youngest difficult - more difficult - the most difficult hot - hotter - the hottest comfortable - more comfortable - the most comfortable good - better - the best bad - worse - the worst short - shorter - the shortest
young - younger - the youngest
difficult - more difficult - the most difficult
hot - hotter - the hottest
comfortable - more comfortable - the most comfortable
good - better - the best
bad - worse - the worst
short - shorter - the shortest
1. happier, the happiest
2.younger, the youngest
3.more difficult, the most difficult
4.hotter, the hottest
5.more comfortable, the most comfortable
6.better, the best
7.worse, the worest
8.shorter, the shortest