Ключевые слова: background, book, business, clock, college, concept, creative, deadline, design, education, exam, female, flat, homework, icon, illustration, indoors, information, knowledge, learn, learning, library, literature, management, modern, one person, open, paper, people, person, project, read, school, smart, stack, student, study, studying, symbol, table, test, text, textbook, time, university, watch, woman, work, young,