Ключевые слова: background, black, blackboard, board, break, chalk, chalkboard, child, childhood, children, class, classroom, college, color, dark, day, drawings, drawn, education, end, exercise, finish, goodbye, handwritten, holidays, homework, knowledge, last, learn, learning, lesson, nobody, object, out, pause, pupil, rest, school, schooling, student, study, studying, subject, summer, task, text, written, year,