Образуйте множественное число. child, goose, datum, game, key, mouse, person, foot, piano, story, factory, woman, page

Children, gooses, datums, games  keys, mouses, people, feet, pianos, stories, factories, women, pages

Childres, gooses, daryns, games, keys, mouses, persones, footes, pianos, stories, Factories, womans, pages