помогите
Exercise 1.Образуйте множественное число имен существительных.

A dog, a ball, a desk, a horse, a fact, a nose, a lip, a mother, a father, a brother, a pen, a pencil,a flower, a kid, a pupil, a lion, an elephant, an apple.

Exercise 2. Образуйте множественное число имен существительных.

A class, a box, a bus, a match, a bush, a wish, a loss, a tomato, a princess, a boss, an ostrich, a brush, a witch, a fox, a dish, a hero, an address, a glass.

Exercise 3. Образуйте множественное число имен существительных.

A cry, a lady, a baby, a puppy, a strawberry, a cherry, a reply, a party, a spy, the sky, a city, a country, a lorry, a doggy, a poppy, a story, an enemy, a family.