Today is (星期六). Betty doesn't go to school. She is (空闲的). In the morning, Betty and her (表妹), Jenny, go to a science museum. They think it is (真正地) interesting. They stay in the museum for an (小时). Then they have (面包) and milk for lunch. After that, they go to the supermarket. Betty buys a model (飞机). Then they go to the bookstore. Jenny buys a Chinese (字典) and some English books. The books in the store are all on (特价销售). At five o'clock, Betty's parents come to meet them by car. They have a big (正餐) together. Betty is very happy today.