Ключевые слова: answer, black, business, change, check, choice, choose, circle, class, college, concept, correct, design, education, element, exam, examination, eyeglasses, eyesight, fill, frame, glass, glasses, icon, illustration, internet, isolated, mark, multiple, paper, pencil, question, red, scan, school, shape, sheet, sign, square, study, success, survey, symbol, test, tick, tron, vote, white,