It was reported that as many as 50％of patients do not take medicine       directed      has drawn doctors’ attention．

   A. when；it        B. as; what             C. as; which       D. that; and

It was reported that as many as 50％of patients do not take medicine 　　　directed, ___　 has drawn doctors’attention.

A. when；it　　　 B.as;what　　　　 C.as;which　　　 D.that;and

(安徽省马鞍山市2009届高三第一次教学质量检测) It was reported that as many as 50％ of patients do not take medicine

       directed，     has drawn doctors’attention．

   A. when；it        B.as;what             C.as;which       D.that;and