Staying in hospital and taking special medicines drug users an opportunity to stay away from drugs, which is the key to breaking the addiction to drugs lies.
A. serves; where
B. provides; what
C. give; that
D. allow; where
网友回答
A. serves; where
B. provides; what
C. give; that
(答案→)D. allow; where
解析：句意：住在医院里吃着特殊的药物就可以给吸毒的人一个远离毒品的机会，这就是打破他们的毒瘾的关键所在。allow留出，后可接双宾语；也可指某人拿出某物款待某人; 还可指某人、物、事对某人、某事等“有…用处”“满足…的需要”“适合…的目的”等。第二空是where引导的表语从句，它在从句中作地点状语，故选D。