Your hair is red. Your eyes are blue. Explanation: "Your" indicates ownership. In other words "your" means "belonging to you". Do not confuse with "you're", it is entirely different "you're" means...
(The form of the verb to be include is, 3rd person singular, and are, 2nd person singular, or any person plural.) She is doing her homework. The cat is on the sidewalk.They are doing their homework....