根据短文判断正误。

It's Saturday, Mr. And Mrs. White go shopping by car. They stop their car near a store. They buy lots of things from the store. The things are very heavy. They want to put the things into the car. However, Mr. White can't open the door of the car.

“Let's ask a policeman for help, "said Mrs. White. They ask a policeman to help them. The policeman is very nice. He helps them open the door of the car.

At that moment, two men come up and shout, "What are you doing with my car?" Mr. and Mrs. White look at the number of the car. Oh, it isn't their car! They said sorry to the man.