1.   And when the jump was perfected, they moved on to something harder.

2.   As she perfected her jumps in Nagano, the weather turned bad.

3.   So Yagudin went back to the rink to perfect his jumps and take his artistry to a new level.

4.   So Yagudin went back to the rink to perfect his jumps and bring his artistry to a new level.