Ключевые слова: advertisement, advice, answer, best, black, blackboard, business, chalk, chalkboard, choice, client, clients, company, concept, customer, face, feedback, good, handwriting, handwritten, happiness, happy, help, helpdesk, information, inspiration, instruction, join, knowledge, marketing, meeting, message, motivation, outlined, people, positive, promotion, quality, ranking, rating, response, salesman, satisfaction, satisfied, service, support, us, wood, word,