Lucy wanted to buy a new sweater. So she asked her best friend, Helen, to go shopping with her. There were many kinds of sweater in the shop. They were different styles and of different colors. They didn’t know which one to choose. The shop assistant came over to help them and advised Lucy to try on some of them. After trying, all of them agreed that one of the styles fit Lucy quite well. At last, Lucy was very happy to have the sweater in light blue.