Ключевые слова: aid, assist, assistance, book, bookmark, call, card, care, closeup, collection, color, colorful, communication, concept, consultant, cooperate, customer, education, friendship, give, group, heap, help, information, knowledge, label, library, management, message, modern, multicolor, paper, pile, problem, professional, row, school, service, sign, solution, stack, study, success, support, team, technology, text, textbook, volunteer, word,