hedy1573

Jack like study history very much.One sunday morning,he was planning to visit a museum.He hurried to the station to catch the 7:30 train.as soon as he got there .He tried to buy a ticket for  that train. The ticket clerk said"the 7:30 train has just left.the next day train will leave 30 minutes. Has the 7:30  train got already? It's 7:27 by my wacth"said jack.
The clerk said with a smile"look at that clock on the wall.it's already pass 7:30,your wacth is 3 minutes solw"