Ключевые слова: academic, asleep, assignment, book, books, carpet, college, education, educational, exam, exams, exhausted, fatigue, floor, graduate, home, homework, information, knowledge, learning, library, lying, man, nap, napping, preparation, preparing, public, reading, research, revising, revision, school, science, searching, sleep, sleeping, sleepy, student, study, studying, teenager, textbook, textbooks, tired, trainee, training, university, working, young,