Ключевые слова: adult, advice, analysis, analyze, background, balance, blue, bulb, business, businessman, concept, creativity, draw, education, equal, equation, graphic, hand, human, idea, lots, man, manager, meeting, model, money, office, pen, person, plan, plus, pointing, presentation, profit, rich, screen, seminar, showing, sign, sketch, sketching, teacher, teaching, think, white, whiteboard, work, write, young,