Today, our school launched a book exchange activity.

In the afternoon, our class finally succeeded in "surviving" the first class. Next, we will have a long-awaited "book exchange activity"! We lined up excitedly and set off for the new campus. Many people have arrived, so let's quickly lay the mat, tidy up the books and sell them! After a while, a customer came. He picked around and finally found a favorite book. "How much is this?" "Three dollars." "Deal." Similar languages like this come and go. After a long time, I finally found my classmate to replace me. I can look around. Some sellers are anxious to find money, some customers who pay for books are anxious ... buyers, and some take a fancy to a book at the same time. You went out of 5 yuan, I went out of 6 yuan ... I came back. Then, I picked up some books to sell, but I squeezed in and asked, only to know that we had received a counterfeit hundred-dollar bill, but the students who collected the money didn't recognize it, so we formed a group and hurried to find that person ...

Although there was an unpleasant counterfeit currency incident today, it did not affect the enthusiasm of students to buy books. Everyone bought their favorite books and went home happily.