Ключевые слова: abstract, background, book, bright, concept, cover, education, glasses, grass, green, group, information, knowledge, lawn, learn, library, literature, nature, nobody, old, outdoors, outside, paper, park, pile, pupil, read, reading, school, science, semester, shabby, spring, stack, student, study, summer, summertime, thick, vacation, vision, wisdom, wise,