six o'clock
Betty asked , as they went into the house together , Jack moving slowly and cautiously on his crutches , but walking as neither his mother or Betty had ever expected to see him walk . `` Yes , rather earlier . Miss Leroy was going to a luncheon , and did n't take her full time . I shall be busy all the afternoon until six o'clock , though , for I begin with two new pupils to-day . '' `` Lulu Bell has asked us over to her house , '' said Betty ; `` her aunt is going to tell us stories . You do n't mind our going , do you ? '' `` Oh , no , indeed , only do n't tire poor Miss Warren out telling you stories , and if you get home before six , you may take Jack down on the beach for a little while .