It is evident that success lies hard work; other words hard work leads to successA. on

问题补充：

It is evident that success lies hard work; other words, hard work leads to success．

A. on; on

B. in; in

C. on; in

D. in; with

答案：

A. on; on

(答案→)B. in; in

C. on; in

D. in; with

解析： 考查固定结构。lie in，存在于，位于；in other words,换句话说。句意：很明显成功在于辛勤工作；换句话说，辛勤工作可以导致成功。所以选B。