几道初二英语题目,求解!~~

问题描述:

几道初二英语题目,求解!~~
1.The doctor talks to the patients every day ____ a special radio.
A.in B.at C.by D.on
2.The medicine ____ the cough that the doctor gave ___ very expensive.
A.for;is B.of;are C.for;are D.of;is
求解!~~·

D on the radio固定搭配
A medicine for治疗XX的药,medicine用单数