dialogue: M: I found that one of my schoolmates uses drugs. How can I help him, Mom? W: stay away from him, son. Never think that you can talk him out of the habit if he is addicted. But perhaps you can talk to your teacher about the matter.
question: what's the woman's advice to her son?
choice: Stop thinking about the matter. Talk the drug user out of the habit. Keep his distance from drug addicts.
answer: Keep his distance from drug addicts.