Ключевые слова: book, bookcase, bookshelf, boy, child, childhood, classroom, concept, cute, desk, development, education, educational, elementary, exploring, half, homework, human, indoors, information, kid, knowledge, learn, learning, length, library, literature, little, looking, person, point, pupil, read, reading, research, school, schoolboy, shelf, shoulders, single, sitting, smile, store, student, study, studying, textbook, thinking, youth,