Помогите с Д/З по английскому языку

Colder, the coldest
more expensive, most expensive
easier, easiest
better, the best
worse, the worst
2.
Heavier
the biggest
taller
slower
stronger
more dangerous
noisier
the most intelligent
lazier
3.
Cheetahs are faster than sheep
Ants are smaller than bees
Hippos are fatter than tigers
Dogs are more obedient than cats