After reading each sentence, we can correct their error in pronoun reference or agreement in the following manner:
After talking to his brother, Jeff went home.
Frugal shoppers count their coupons before they shop.
Their mess was left for someone/others to clean up.
The crowd sat through two hours of rainy soccer, which ended in a tie.
Neither his brothers nor Mr. Paulson remembered to purchase his hunting license.
<h3 /><h3>Problems with pronoun reference and agreement in the sentences:</h3>
In the original sentence, it is unclear whether the pronoun "he" refers to Jeff or to his brother. We must correct the sentence by choosing to whom it refers.
"Shoppers" is a plural noun, so using the singular "her" and "she" is not correct. We must use plural pronouns, "their" and "they".
When the sentence uses "one", all pronouns must refer to it. Since we have "their" in the beginning of the sentence, we can simply drop the "one" and use other pronouns.
In the original sentence, it is unclear whether "it" refers to crowd or to soccer (match). Again, we must correct the sentence by choosing to which it refers.
Finally, when the antecedent has "neither... nor...," the pronoun must agree with the antecedent that is closer to it. In this case, "Mr. Paulson" is closer, so we should use "his".
