A、He spends much school time playing computer games. B、He often dozes off in class. C、He doesn’t take the assignments seriously.

W: Hi, Jack, have you finished Professor Smith’s assignment?
M: The assignment? No, not yet.
W: But tomorrow’s the deadline.
M: Anna, take it easy. I can always pull it together in no time.
W: Hey, don’t you think playing PC games takes up too much of your time?
M: Oh, computer games represent the latest technology. You can’t simply ignore them.
W: I know. You can play as much as you like during the holiday, but not now. It’s affecting your studies.
M: It’s not. I feel I’m getting smarter day by day, and my reaction time is much quicker.
W: You only become alive and alert at those war games. In class, I saw you doze off.
M: It’s not my fault. The textbooks are boring and the lectures are tedious. I dislike those teachers who love to call the roll. But the games are interesting, challenging and can broaden my mind as well.
W: I didn’t say the games are all bad, but you can’t play games all the time. Have you ever considered what you will do if you fail the exams?
M: Well...
W: I know it’s not easy to resist the temptation, but self-discipline is essential to one’s success. It’s part of one’s character. Look at yourself in the mirror. You look pale and haggard. See, you have nothing but half a life.
M: Really? Oh, heavens!
Questions 13 to 15 are based on the conversation you have just heard.
13. Why doesn’t Jack finish his assignment?
14. What do we know about Anna?
15. Which of the following statements about Jack is not true?