In this task if the pronoun is female or gender-neutral you are to replace it with a male pronoun. If there are no pronouns add a male-gendered word to the sentence.

anything else you know concerning her dude
anything else you know concerning him dude

she's a girl like us and did it at the age of 18. so impressive, don't you think?
She did it at the age of 18. So impressive, don't you think?

How wonderful! I have totally been thinking of learning a new language.

Wow, I have been thinking of learning a new language.