Ключевые слова: adult, answer, background, blue, box, business, businessman, check, checkbox, checklist, choice, choose, concept, draw, education, exam, examination, fill, form, hand, human, idea, list, man, mark, option, pen, person, pointing, presentation, questionnaire, red, report, school, screen, select, showing, sign, solution, student, survey, teacher, teaching, test, tick, white, whiteboard, work, write,