尽管遇到很多困难，他还是坚持不懈地练习钢琴。

Despite many challenges, he ___persevered in practicing the piano.

尽管训练很艰苦，她仍然坚持跑步。

Despite the tough training, she ___persevered with her running.

尽管遇到很多困难，她还是坚持不懈地学习英语。

Despite many difficulties, she ___persevered in learning English.