Ключевые слова: alarm, background, bell, blue, book, business, clock, concept, countdown, cover, day, daylight, deadline, education, garden, green, homework, hour, information, knowledge, late, learn, library, light, literature, memo, minute, morning, natural, nature, notebook, office, old, page, paper, read, reminder, school, space, stationery, student, study, summer, textbook, time, timer, university, wake, watch, wisdom,