What change do the details in the passage help the writer explain?
Highlight details that show an important change in the writer's
life.
I had entered the world of teenagers, and I wasn't even
one of them yet. Lynette Gardner had always been my
best friend, until February, when she turned thirteen. I
wouldn't be thirteen until August.
-"I'm Not Thirteen Yet,"
Amy Bernstein
O She was not a teenager yet.
O She would soon be thirteen
She had lost her best friend,
O She did not understand how teenagers act.

She had lost her best friend,

Explanation:

Based on the passage given, the narrator states that she had entered the "world of teenagers" even before she became one and then she lost her best friend Lynette Gardner who was her best friend "until February when she turned thirteen".

The change that the details help the writer explain is that the writer had lost her best friend

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.