A)Stop thinking about the matter .
B)Talk the drug user out of the habit .
C)Be more friendly to his schoolmate .
D)Keep his distance from drug addicts .
原文：
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.Bperhaps you can talk to your teacher about the matter.
Q:What's the woman'sadvice to her son?