five o'clock
`` What is the matter ? '' `` Nothing , '' he answered . `` I suppose one must be serious sometimes . Good-bye , mother ; I will have my dinner at five o'clock . Everything is packed , except my shirts , so you need not trouble . '' `` Good-bye , my son , '' she answered , with a bow of strained stateliness . She was extremely annoyed at the tone he had adopted with her , and there was something in his look that had made her feel afraid .