Exercise 1.9. put the following nouns in plural form: a cat, a forest, a dollar, a railroad, a horse, a pan, a girl, fitness, a bench, a tomato, a car, a flag, an apartment, a telephone, a box, a knife, a fork, a fox, a rabbit, a wife, a landlady, an army, a fly, a sky, a potato, a life, a story, a pack, a lamp. a shelf, a foot, a wife, a roof, a fly, a foot, a tooth, a goose, an ox, a child, a woman, a man, a bacteria, a criterion, axe. exercisel.10. put the following nouns in plural form: a box, a sheep, a place, a library, a photo, a mouse, a lady, a glass, a bush, a dress, a country, a bus, a party, a wife, a day, a knife, a knowledge, a month, a pen, a hero, a goose, a company, a life, a deer, a tomato, a city, a man, a play, a news, a child, a fruit, a shelf, a leaf, a foot, a fish, a woman, money, information. exercise 1.11. write down the following nouns in plural: a star, a mountain, a tree, a waiter, the queen, a man, a woman, an eye, a shelf, a box, a city, a boy, a goose, a watch, a mouse, a dress, a toy, a sheep, a tooth, a child, an ox, a deer, a life, a tomato.