Which writing sample uses pronouns correctly?

Mr. North is everyone’s favorite science teacher. He does crazy experiments and lets us help. We especially love helping him feed his pet snake Esme.
Mr. North is everyone’s favorite science teacher. Him does crazy experiments and lets us help. We especially love helping he feed his pet snake Esme.
Mr. North is everyone’s favorite science teacher. He does crazy experiments and lets we help. We especially love helping him feed her pet snake Esme.
Mr. North is everyone’s favorite science teacher. She does crazy experiments and lets us help. Us especially love helping him feed his pet snake Esme.

1 answer

The first writing sample uses pronouns correctly:

"Mr. North is everyone’s favorite science teacher. He does crazy experiments and lets us help. We especially love helping him feed his pet snake Esme."

The other samples contain errors in pronoun usage.