Образовать множнественное число ; a kidney, a race, a brain, water, a pore, a man, a head, a child, an artery, a life woman, set, group, work, mouse, name, art, play, star, year, idea, sorrow, ray, culture,

Kidneys, races, brains, water, pores, heads, children, arteries, lives, women, sets, groups, works, mice, names, arts, plays, stars, years, ideas, sorrows, rays, cultures