M: Nancy, how are you feeling this morning? You're not looking very good. ,F: No. I'm not in the best of health. ,M: It's the same old story, isn't it? Overwork! Listen, Nancy. You can't go on burning the candle at both ends! ,F: You're right, but I want to use every minute of my time studying my subjects. Besides, I'm under a lot of pressure in class. Sometimes I can't follow the professor and very often I'm not able to take notes while listening. I have to check notes with my friend, which is very time-consuming. ,M: I can understand Nancy. But if you go and working so hard, you could become ill and that would waste lots of time. Do you sleep enough? ,F: Well, about 5 hours a day.
(A) M: That's great. Sleeping about six hours a day is enough. (B) M: That's great. Five-hour sleep is enough. (C) M: I am afraid I did not quite catch what you were saying. Please repeat it. (D) M: Great! Sleeping about four hours a day is enough for students like you.
C