Ключевые слова: background, blackboard, board, break, chalk, chalkboard, child, childhood, children, class, classroom, college, color, day, desks, drawings, drawn, education, end, exercise, finish, goodbye, green, grey, handwritten, holidays, homework, indoors, knowledge, last, learning, lesson, light, nobody, object, out, pause, pupil, rest, room, school, student, study, studying, summer, task, text, wall, written, year,