four o'clock
`` How long did she keep you in ? '' asked Meg , as he flung his cap into the corner . `` An hour , '' returned Bobby . `` She let all the boys go but six of us at four o'clock , and she says one of us six must have done it . And they all say it 's me . But I did n't do it . '' He was looking at Mother Blossom , and she smiled back at him , her own , sunny , cheerful smile .