Ключевые слова: back, book, books, boy, class, college, courses, desk, education, exams, eyeglasses, for, frustrated, frustration, glasses, graduate, happy, high, home, homework, knowledge, learning, lesson, male, man, many, much, overdue, preparing, reading, school, smile, smiling, stack, stress, stressed, student, study, studying, teenager, textbook, textbooks, tired, to, too, trainee, training, under, university, window,