How do you study tests?-I study making flashcards.A. for withB. of byC. for byD. wit

问题补充：

How do you study tests?

---- I study making flashcards.

A. for with

B. of by

C. for by

D. with for

答案：

A. for with

B. of by

(答案→)C. for by

D. with for

解析：for为了，表示原因目的等；with带有，表示伴随状况等；of……的，表示性质属性等；by通过，表示通过某种方式等。句意：为了考试你怎么学习？——我通过制作幻灯卡片来学习。故选C。