Bill is a middle school student. He likes playing computer games, but his mother doesn’t allow him to play computer games, because sometimes he can’t stop himself. So his mother said to him: "If you want to play computer games, you can think 'My mother may behind me.'"
One day, Bill's mother wasn’t at home. So Bill played computer games at once. An hour later, Bill suddenly saw in the mirror that his mother was behind him, his mother said: "I have told you, I may be behind you."
Question:
(1)Why Bill’s mother doesn’t allow him?Because sometimes Bill can’t stop himself .
(2)Who is behind Bill?His mother.
急求!