Ключевые слова: background, bad, blue, book, bored, boring, boy, child, childhood, classroom, desk, difficulties, education, elementary, first, his, homework, kid, lazy, learn, learning, little, male, mood, person, problem, problems, pupil, school, schoolboy, schooling, sitting, sleep, sleeping, sleepy, stress, student, study, studying, table, teenager, textbook, tired, unhappy, white,