The doctor gave me some medicinemy cough and told me to take it a day.A. of; twiceB. for;t

问题补充：

The doctor gave me some medicinemy cough and told me to take it a day.

A. of; twice

B. for;three

C. for;twice

D. to;twice

答案：

A. of; twice

B. for;three

(答案→)C. for;twice

D. to;twice

解析：句意： 医生给我一些治疗咳嗽的药并且告诉我一天吃两次。For my cough,对我的咳嗽，用for.两次是twice,而三次是three times.故选C。