seven o'clock
`` We 'll be there , so there 's no use of your saying any more about it , '' said Bob , in a voice of finality . `` How about it , fellows ? '' All the radio boys were of the same mind , so Larry was forced to give in . `` But if you 're going to get back to Clintonia in time to hear my act at seven o'clock , you 'll have to leave pretty soon , '' he said . `` I 'm not going to detain you here any longer . '' `` I 'm afraid we will have to be going , '' said Dr. Dale , glancing at his watch . `` The ferries are apt to be crowded at this hour , too .