Ключевые слова: back, backdrop, background, black, blackboard, blank, board, chalk, chalkboard, class, classroom, college, concept, design, desk, display, drawing, educate, education, elementary, empty, homework, idea, interior, knowledge, learn, learning, library, mock, nobody, perspective, product, room, school, sketch, space, student, study, studying, table, tabletop, teach, teacher, template, top, training, university, wood, wooden, write,