One Sunday morning, Mrs. Brown and her children(孩子们), Bill and Mary, are in a big store. Mrs. Brown wants to buy a new sweater for Bill and a new skirt for Mary. But they don't like clothes. They only want something to eat. Bill likes bananas and hamburgers very much. So Mrs. Brown buys two kilos(千克)of bananas and a hamburger for him. Mary likes milk and strawberries. Strawberries are cheap. They are at a very good price and only three dollars a kilo. So Mrs. Brown buys milk and two kilos of strawberries for her. They also buy some picture books and color pencils. There are many people in the store. They want to buy something else there. They look happy!