Ключевые слова: academic, background, blue, books, business, classroom, closeup, college, communication, course, dictionary, different, education, english, flag, foreign, group, information, international, kingdom, knowledge, language, learn, learning, lesson, library, light, linguistic, many, object, paper, polyglot, read, red, school, student, study, studying, teach, textbook, training, travel, united, university, vocabulary,