Ключевые слова: american, ask, background, black, blackboard, calligraphy, chalk, chalkboard, character, commonwealth, communicate, communication, comprehension, countries, design, do, english, frame, horizontal, idiom, incomprehension, information, isolated, languages, learning, pattern, question, sentence, sign, speak, speech, symbol, teaching, text, understanding, universal, white, write, writting, you,