——       do you study English?

——By        flashcards.

A. Why, make          B. How, making        C. What, making      D. When, make

How do you study _____ a test? -- I study? _____ making flashcards??

A. by, for??? B.for ,for??? C. for , by?? D. by ,? by

How do you study ____ tests?

---- I study ____ making flashcards.

A．for with           B．of by             C．for by            D．with for