Preparing to Build Level 2 Typo?

[hfwalker]

I'm a little confused on #2 and #8 on page 164 in section A. The student is to pick out the two pronouns in each sentence. One will be a singular pronoun and one will be a plural pronoun. Naturally my daughter picked you and I for #2 and you and her for #8, but that can't be right because both are singular. I thought, "They can't mean "boys" and "girls" are pronouns", because those are nouns. We looked them both up in the dictionary and it says they are nouns. So, I'm assuming this is a typo?

[mommymoles]

The word "you" in both sentences is the plural form because it is talking to more than one person.