nine o'clock
`` Because I do n't understand . '' `` What do you mean by saying you do n't understand ? It 's all quite simple . If Teresa is angry , I 'll tell her that we left the garden at nine o'clock ; then I 'll show her my watch . '' `` But , '' cried Paula , quite upset , `` that would be a lie ! '' `` Nonsense , you foolish youngster , that 's not a lie . We 'll go from here at the dot of nine , according to my watch , and that 's what I 'll tell Teresa in case she asks us .