【题目】Doctors have said that as many as 50% of patients don’t take medicine ______.
A. like directed B. to be directed
C. as directed D. so that directed
在线课程【答案】C
【解析】句子要表达as they are directed。当状语从句的主语和主句主语一致时，从句主语和be动词可以省略。根据句意选C。句意：医生说,多达50%的病人不按指导服用药物。根据句意选C