last sunday ,mr and mrs white went shopping by car.tney stopped their car near a shop.they bought alot of things and they wanted to put the things in the car .but mr white couldn't open the door of the car,so they asked a police man to help them.the policeman was very friendly to help them.just then a man came up and shoutsd ,''what are you doing with my car?''mr and mrs white took a look at the car's number and they were frozen there.it isn't their car.
1 how was the policeman?
2 what did they find at last?