Ключевые слова: adc, advice, analysing, ask, assistance, assistant, background, block, boss, business, businessman, chief, commissioner, communication, company, concept, cube, director, district, education, finance, financial, hand, help, holding, illustration, information, lay, leader, learn, letter, liquid, man, management, manager, many, marketing, melting, message, office, officer, problem, professional, refresh, strategy, success, table, text, wood,