1) radios, lessons, courts, thieves, potatoes, houses, eyes, fish, toothbrushes, roses, stories, truths, keys, mice.
2) children, paths, heroes, days, book-cases, oaks, manners, lice, studies, geese, wolves, yards, brushes, sofas.
3) men, horses, ideas, kilos, teeth, brothers, cousins, glasses, daisies, oxen, swine, grass, lions, writing-tables.
4) sons-in-law, youths, pianos, halves, dreams, feet, deer, children, materials, mice, servants, potatoes, cowboys.
5) women, hooves, branches, mosquitoes, oxen, frogs, mouths, hills, roots, photos, feet, countries, joints, nouns.
ответ: which
Agriculture, which is a very important part of people's lives in Kazakhstan, consists of crop production and animal breeding.