Ms. Sanchez: Good morning! Next Friday, the library is holding its first book swap. Here's how it works. Bring up to three books you have already read to the library before Wednesday. For each book you bring, you'll get one ticket. On Friday, you can trade your tickets for books that other students brought.

Ms. Sanchez: Please bring only books that are in good shape, with no torn pages and no writing inside. Any books that are left over at the end of the day will be given to the children's hospital downtown. And if you don't have any books to bring, come anyway. Every student gets one free ticket just for stopping by.