Ключевые слова: background, blank, blue, board, book, close, copy, copyspace, document, educate, education, elementary, empty, expertise, green, group, information, interior, isolated, knowledge, learn, library, literature, lots, many, multicolored, old, open, orange, page, paper, pink, read, research, retro, school, schoolwork, space, stack, study, table, teach, texture, train, university, up, vintage, wood, wooden,