2. Напишите следующие существительные во множественном числе. Galaxy, key, glass, torch, handkerchief, factory, leaf, zoo, prize, potato, piano, watch, goose, fireman, foot, mouse, policewoman, sheep, deer, tooth, fellow-worker, merry-go- round, man-of-war, passer-by, brother-in-law, forget-me-not, room-mate, woman-driver.