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.

John, I am currently not working, but i did participate in a talent show.
I am currently not working.but i did participate in a talent show

He was the author who wrote in the book, chromosomes to genome?
The author who wrote in the book, Chromosomes to Genome?

i already told you. it is blue like my football jersey

I already told you. It is blue.