Ключевые слова: adolescent, asleep, bed, book, caucasian, couch, cute, domestic, education, exam, exhausted, fatigue, guy, handbook, home, homework, human, indoor, lassitude, learn, lie, lying, male, man, nap, one, overwork, person, pupil, reader, room, single, sleep, sleeper, sleepy, sofa, student, study, teen, textbook, tired, tiredness, weariness, work, young, youth,