дайте форму множественного числа Write in plural:
baby, roof, idea, pet, way, valley, story, sky, university, goose, address, holiday, mouth, scarf, picture, ox, rose, street, bus, lady, bush, photo, cherry, cliff, hero, knife, tooth, toy, cup. ​

babies, roofs, ideas, peys, ways, valleys, stories, skies, universities, geese, adresses [вроде], holidays, mouths, scarfs, pictures, ox, roses, streets, buses, ladies, bushes, photos, cherries, cliffs, heroes, knifes, teeth, toys, cups