英语翻译One day an old lady wanted to go to London to see her so

英语翻译
One day an old lady wanted to go to London to see her son.She got up early and arrived at the small station at nice o'clock in the morning.Because this was her first trip to London,she didn't know the train time.She was very worried.Just at that moment,she saw a little boy running toward her.She stopped the boy and asked him what time the train would arrive and when the train wold leave for London.The boy looked at the woman and said,"tu;tu;tu;tu;”just like a firing gun .The old lady was very surprised and got angry.She wondered why the boy played a joke on her.She sat in a chair,thought and thought,then she began to smile.But she suddenly cried out,“What a clever boy!He's told me the time in such away.” do you know the time?