go for|going for

他将努力争取他的第五枚奥运金牌。

He'll be ___going ___for his fifth Olympic gold medal.

当面临挑战时，就去争取吧。

When faced with a challenge, just ___go ___for it.

如果你有热情，就去追求它。

If you have a passion, ___go ___for it.