Don’t take too much of the medicine;it does you more harm than good if you.A. doB. takeC.

问题补充：

Don’t take too much of the medicine;it does you more harm than good if you.

A. do

B. take

C. like

D. have

答案：

(答案→)A. do

B. take

C. like

D. have

解析：if you do是省略形式，为了避免重复，常用助动词代替谓语动词。do代替上文中的take too much of the medicine。have用于代替上文中的现在完成时。