Два номера заранее спасибо и 20 балов
17. To see - saw, a foot-feet, long-longer, to help - helped, a friend - friends, old-older, short-shorter, to walk-walked, to talk - talked, high-higher, to want- wanted, thin - thiner, a hand-hands, fat-fatter, cold-colder
а второй
18
1. a, 2. the, 3.the, 4. a, 5 the, 6. the, 7 a