Ключевые слова: background, basic, book, business, class, classroom, college, colorful, concept, design, desk, dictionary, education, english, explaining, foreign, grammar, handwritten, illustration, international, knowledge, language, learn, lesson, message, modal, note, notepad, office, paper, person, profession, professional, professor, school, sign, study, table, teach, teacher, text, topic, training, tutor, university, verb, verbs, wood, wooden, workplace,