Ключевые слова: alarm, back, background, bell, blank, book, business, clock, closeup, college, concept, content, deadline, design, diary, document, education, empty, exam, heap, homework, hourglass, instruction, isolated, learning, literature, message, minute, note, notebook, object, open, page, paper, pen, pencil, read, reading, school, sheet, stack, study, studying, test, textbook, time, time concept, timer, white, wisdom,