Ключевые слова: academic, back, book, books, classroom, clock, deadline, disappointed, education, exam, frustrated, hardworking, homework, hourglass, hours, late, learning, lesson, library, long, looking, man, management, many, missing, pile, preparation, preparing, punctual, punctuality, reading, research, sad, sand, sandglass, school, stressed, student, study, studying, textbook, textbooks, time, timer, tired, training, university, upset,