Exercise 1: Образуйте множественное число имен существительных.

A dog - dogs, a ball - balls, a desk - desks, a horse - horses, a fact - facts, a nose - noses, a lip - lips, a mother - mothers, a father - fathers, a brother - brothers, a pen - pens, a pencil - pencils, a flower - flowers, a kid - kids, a pupil - pupils, a lion - lions, an elephant - elephants, an apple - apples.