Identify the choice that best describes the underlined word for questions 7-9.
7. masako took jonah's woolen hat by mistake, thinking it was (hers).
a. first-person pronoun
b. second-person pronoun
c. reflexive pronoun
d. possessive pronoun.

8. the children went to look for their toys, but they could not find (any).
a. appositive
b. antecedent
c. indefinite pronoun
d. possessive pronoun

9. the gym teacher had us (boys) run for about 45 minutes.
a. appositive
b. antecedent
c. indefinite pronoun
d. reflexive pronoun.

7. D

possesive pronoun because it shows ownership

8. C

indefinite pronoun because it doesn't refer to any specific person, thing or amount

9. appositive

an appositive is a word that comes right after a pronoun and identifies/renames it

i may be wrong but i think your answer is flashback

the answer is:

when will (v) the books (n) be (v) due?

nouns refer to people (other than pronouns), places and things, whereas verbs describe actions and are usually part of the predicate of a sentence. finally, pronouns can work as nouns and identify the participants in speech.

in the example sentence, "will" is a verb part or auxiliary verb, "be" is an infinitive verb and "books" is a plural noun.