经过几个月的治疗，他终于恢复了视力。

After months of treatment, he finally ___regained his eyesight.

经过几个月的训练，他终于重新获得了之前的体能水平。

After months of training, he finally ___regained his previous fitness level.

她休息了一会儿，重新集中注意力。

She took a short break to ___regain her focus.