问题: [单选题]If a drug addict wants to keep clean and sober, what should he do?UD3答案窝(daanwo.com)-大学作业答案分享平台 ALive in the previous apartmentUD3答案窝(daanwo.com)-大学作业答案分享平台 BHang out with old friendsUD3答案窝(daanwo.com)-大学作业答案分享平台 CKeep the old lifestyleUD3答案窝(daanwo.com)-大学作业答案分享平台 DMove to a new environment and start all over