hearten|heartened|heartening

老师亲切的话语让我备受鼓舞。

The teacher's kind words ___heartened me a lot.

看到学生们如此努力真是太鼓舞人心了。

It's really ___heartening to see the students working so hard.

老师的鼓励让她重新振作起来。

She was ___heartened by her teacher's encouraging words.