Ключевые слова: academic, books, bored, boredom, boring, boy, child, class, classmates, classroom, confused, depressed, education, homework, indoors, junior, knowledge, lazy, learning, lecture, lesson, nap, people, problem, pupil, sad, school, schoolchildren, sitting, sleepy, streaming, stress, student, students, studying, teenager, thinking, tired, tiredness, unhappy, watching, young,