Mi primo es joven =My cousin is young
Es un hombre que reparte cartas de casa en casa se le llama CARTERO.
The answer for that would be,"El Yendo"
The answer should be "Perla y Rubí son bonitas".
Explanation:
It should be "son" instead of "es" because there is more than one thing, and "bonitas" because it seems like both are females. (I'm answering based on what I know
of own language, I hope it helps)