A girl and her father go to a store to buy a Barbie doll（芭比娃娃）.She has fifty（ dollar）.When she sees a nice doll，she asks，"Dad，can I have this?"Her father says yes.
A little boy comes to the storehis father，too.He needs some books，but he only （ have）a little money.He sees a new book，and he（ real） wants it.Then he asks his father for help，his father just says no.The boy has to leave（离开） the store，although（尽管） the book is very （use） for him.
When the girl sees this，she puts the doll down and runs to the book.She （ take） the book and runs to the cashier（收银员）.After the girl buys the book，she givesto the cashier and says something.
The next day，the boy comes to the store and wants（ buy） the book.The cashier shows the book to him and says，" You are（10） first child to come to our store，and you can have this book for free（免费地）."
