Ключевые слова: assistance, background, black, blackboard, business, chalkboard, childhood, class, classroom, college, concept, desk, education, exercise, group, holder, home, homework, inscription, knowledge, learn, learning, lesson, lifestyle, marker, message, nobody, note, notebook, notice, object, office, pencil, pencilbox, preparation, research, school, schoolwork, stationery, student, study, studying, success, supplies, table, university, wisdom, wooden, word, work,