"Is there someone who plays the stupid prank?"

Ethel was confused. After a while, she said, "The new term begins. Who did that? Although some people know Catherine except our classmates, who did play the prank?"

Catherine shrugged and answered, "I don't know. Don't throw the question at me."

"It is weird."

Catherine smiled and then said, "All right. Forget it. If the person aims to do something, we can wait for the next move. Let's get back."

Catherine knew some people disliked her, such as ...