Ключевые слова: background, blackboard, british, business, closeup, college, communicate, communication, concept, conversation, course, desk, development, discussion, education, english, flag, immigration, information, knowledge, language, learn, learning, lesson, message, school, schoolroom, sign, speak, student, studies, study, studying, success, symbol, table, talking, teach, teacher, text, translation, travel, understand, understanding, united, united states, university, usa, word, work,