Ключевые слова: abc, abnegation, alphabet, answer, background, blackboard, blank, blankness, board, business, businessman, chalk, classroom, declinature, decline, denial, deny, disclaimer, education, english, hand, hold, isolated, male, message, negative, no, paper, rebuff, refusal, rejection, replication, reply, repudiation, repulse, school, schoolroom, serious, showing, sign, suit, symbol, teaching, text, white, word, write,