One day Mr and Mrs White went shopping by car. They stopped their car near a shop. They bought a lot of things and they wanted to put the things into the car. But Mr White couldn't open the door of the car. So they asked a policeman to help them. The policeman was very friendly. He started to open the car for them. Just then a man came up and shouted, " What are you doing with my car? " Mr and Mrs White had a look at the car's number and they were frozen (僵硬的) there. It wasn't their car. ( ) 1. Mr and Mrs White drove for shopping. ( ) 2. They stopped their car at the gate of a library. ( ) 3. They wanted to give their things to a policeman. ( ) 4. The policeman would like to help Mr White. ( ) 5. From the passage, we know Mr and Mrs White made a mistake.