according to the instructions the medicine will work for your headacheA. To takeB. Taking

问题补充：

according to the instructions，the medicine will work for your headache．

A. To take

B. Taking

C. Taken

D. Take

答案：

A. To take

B. Taking

(答案→)C. Taken

D. Take

解析：

试题分析:句意：如果按照说明服用，这种药物将会对你头疼起作用。此处是非谓语短语做状语，句子主语the medicine和动词take之间是被动关系，应该用过去分词，答案选C。