Ключевые слова: alphabet, b, blackboard, board, business, chalk, chalkboard, change, choice, choose, colorful, concept, crossed, decision, draw, drawing, focus, font, goal, hand, handwriting, idea, letter, light, male, message, metaphor, note, options, plan, policy, problem, question, road, select, shadow, sign, sketch, solution, strategy, success, symbol, task, teacher, text, thinking, versus, white, word, write,