Ключевые слова: alarm, attention, autumn, background, beautiful, bell, blue, brass, call, child, chime, clever, closeup, cloudy, copy, education, elementary, girl, gold, grader, hand, kid, knowledge, lesson, metal, nature, peal, person, preschool, primary, pupil, ready, recess, retro, ring, ringer, school, schoolgirl, september, shiny, sky, smart, sound, space, student, study, symbol, text, vintage, warn,