Ключевые слова: answer, app, background, bubble, communication, competition, concept, design, education, exam, examination, flat, game, graphic, hand, holding, icon, idea, illustration, information, learn, logo, megaphone, message, neon, object, play, poll, problem, question, questionnaire, quiz, school, sign, speech, student, style, symbol, test, text, think, time, web, white, word,