--Do you often read English magazines? 
-- No, because I find the words _____the magazines too hard ____ me to understand.

--Do you often read English magazines? 

-- No, because I find the words _____the magazines too hard ____ me to understand.

--Do you often read English magazines? 
-- No, because I find the words _____the magazines too hard ____ me to understand.

1. A.
   in, for
2. B.
   on, for
3. C.
   in, of
4. D.
   on, of

 ---Do you often read English magazines? 

--- No, because I find the words _______ the magazines too hard ______ me to understand.

A. in, for      B. on, for      C. in, of      D. on, of