Intro to Pronouns

I asked if they could help pass out the papers. Does this sentence use pronouns correctly?

(It, Its) is important to water (you, your) plants regularly.

Which word is a demonstrative pronoun?

"It" can be possessive, subjective, and/or objective.

Objective pronouns receive the action of the verb.

Both of these math problems require (its, their) own formulas.

If Carlos plans to apply for some jobs they should finish his resume. Does this sentence use pronouns correctly?

Which word is an interrogative pronoun?

Both intensive and reflexive pronouns refer back to the previous noun (or subject of sentence).

The strawberries are so delicious I could eat them all. Does this sentence use pronouns correctly?