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
网友回答
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。