revising sentences to remove these pronouns When a police officer fires his gun, he mustfill out a lot of paperwork. When a teacher writes an exam, they think about what aspects of students learning they want

There are two pronouns that don't agree with their antecedent.

Do you see it?

Note: it would be easier to change the number of the antecedent.

My comments: How dare you refer to a gun as he, everyone knows guns are she.

And, of course, exams do think about students.

You're in rare form, Bob. <g>

When a police officer fires a gun, the officer must fill out a lot of paperwork. When a teacher writes an exam, the teacher thinks about what aspects of students' learning they want.

To revise the sentences to remove the pronouns without changing the meaning, we need to replace the pronouns "his" and "they" with the corresponding nouns. In the first sentence, we replace "his" with "the officer." In the second sentence, we replace "they" with "the teacher."