Such explanations no doubt explain the purported origin of tipping-in the 16th century，boxes in English taverns carried the Phrase 'To Insure Promptitude'(later just 'TIP')．tavern的意思是'小旅馆，客栈'，与答案选项中的inn是同义词，所以是正确答案。TIP的意思是保证快速服务，选项'保证服务生得到更多...