Ключевые слова: answer, background, black, blue, business, check, checkbox, checklist, choice, clipboard, concept, design, document, education, exam, examination, flat, form, icon, illustration, inches, isolated, list, mark, note, office, page, paper, pen, pencil, plus, question, questionnaire, quiz, report, result, school, sheet, sign, success, survey, symbol, test, tick, white, yellow,