Ключевые слова: abstract, agenda, background, black, book, business, class, college, communication, computer, concept, conceptual, course, curriculum, design, desk, education, flat, idea, illustration, isolated, job, laptop, learn, learning, lesson, list, message, note, office, online, paper, people, plan, schedule, school, student, study, studying, subject, syllabus, symbol, text, textbook, timetable, training, university, white, word,