1.
Happy - happier - happiest
Young - younger - youngest
Shallow - more shallow - the most shallow
Difficult - more difficult - the most difficult
Dirty - dirtier - dirtiest
Patient - more patient - the most patient
Hot - hotter - hottest
Comfortable - more comfortable - the most comfortable
Brave - braver - bravest
Wise - wiser - wisest
Friendly - more friendly - the most friendly
Ridiculous - more ridiculous - the most ridiculous
Late - later - latest
Little - less/litter - least/littlest
2.
Faster
Biggest
More healthy
Longer
Bigger
The most important
More danger
Tallest
3.
More intelligent
Most practical
Worse