Ключевые слова: background, blackboard, blank, book, business, class, college, color, computer, concept, copy, design, desk, desktop, education, empty, equipment, eraser, gadget, grip, indoors, learning, mobile, nobody, note, notebook, object, office, paper, pen, pencil, phone, school, space, student, study, studying, supplies, table, telephone, together, top, touchpad, transportation, view, white, wire, wood, yellow,