eight o'clock
`` That depends what it is . '' `` Let me walk back to the station with you tonight . '' `` I do n't mind . '' He went out after tea and went back to his rooms , but at eight o'clock , when the shop closed , he was waiting outside . `` You are a caution , '' she said , when she came out . `` I do n't understand you . '' `` I should n't have thought it was very difficult , '' he answered bitterly .