他全神贯注地盯着面前的乐谱。

He focused ___intensely on the sheet of music before him.

她专注地看着自己的倒影，意识到这并不重要。

She looked ___intensely at her reflection, realizing it didn't matter.

这位运动员为即将到来的比赛进行了高强度训练，每天都在挑战自己的极限。

The athlete trained ___intensely for the upcoming competition, pushing his limits every day.