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Mr and Mrs White go shopping by car. They stop their car near the shop. They buy a lot of things and they want to put the things in the car. They can't open the door of the car, so they ask a policeman for help. The policeman is very pleased to help them. Just then a man comes up and shouts, "What are you doing with my car?" Mr and Mrs White take a look at the car's number and they are frozen with a shock. It isn't their car.