朗文3L英语听说教程 Lesson 101:Simon 's never careless, but Billy

Lesson 101 Simon 's never careless, but Billy...!
Miss Williams: Here's your exercise-book, Billy.
Miss Williams: You're often careless.
Look at these mistakes!
Miss Williams: Don't laugh at Billy, Sandy!
Miss Williams: Whose is this exercise-book?
Billy: It's Sandy's, Miss Williams.
Miss Williams: Sandy,
put your name on the cover.
You are sometimes careless, too!
Miss Williams: Look at Simon's exercise-book.
Simon's never careless.
His work is always neat and tidy.
Billy! You naughty boy!