The two speakers at the conference yesterday runs a nonprofit organization focused on providing music education to students in the Albany Unified
School District

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.

what are the questions?

" the king sits next to a crown , which symbolizes his power" is   correct   the king is standing on his feet wearing expensive clothing next to the crown.

"the king is wearing elaborate clothing." is correct. this is a symbol of wealth and   royal power.

the king is not dressed like a soldier but like a monarch.

"the king has a sword but he   sits next to a helmet" is correct.

the king is not sitting on the floor.