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1 Задание.
Happy- happier, late- later, fast- faster, thin- thiner, pretty- prettier, hot- hotter, lazy- lazier.

2 Задание.
1) Elephants are big animals.
2) Dolphins are smaller than whales.
3) Monkeys are cleverer than hippos.
4)n summer it is usually hotter than spring.
5)n winter it is colder than in summer.
6)Apples are a tasty fruit.
7)Whales are friendly animals.

3 Задание
1) Elephants are fatter than giraffes.
2)Cats are nicer than lizards.
3) Dolphins are cleverer than whales.
4) Giraffes are thiner than hippos.
5) t's hotter in summer than in autumn.
6)Lena is prettier than Tamara.
7)Gena is friendlier than Artyom.