What big secret do we find out about Zero in Chapter 18?

When he returns to camp he writes a letter to his mother in his tent so that the other boys won't see him. Again, he finds Zero looking over his shoulder. Zero reveals that he doesn't know how to read or write and asks Stanley to teach him

Explanation:

often a noun phrase is just a noun or a pronoun:

people like to have money.

i am tired.

it is getting late.