See Grammar Notes below for comments by grammarians and references. I guess gender-neutral pronouns are grammatically correct. The English pronouns he and she are third-person personal pronouns specific to the gender of the person (not to be confused with grammatical gender). Ok, I have a huge problem to this quiz. Everyone knows that he must keep up with his assignments. Reasons for rewording with plurals or with "singular they or their" include: (1) writer doesn't know the gender; (2) writer doesn't want to mention gender; (3) writer doesn't want to exclude the other gender with his, (4) writer doesn't want to specify gender because the individual(s) does not identify as male or female. Let me know. Would they please do so immediately.