What great ability did Sadako have at school?how did her dreams and those of her parents shatter?

This would be third person because they are using the correct pronouns that belongs to third person like he, the name, etc

Dogs have been considered man’s best friend for decades! most likely because of their kind and loyal nature. they make splendid companions. their loyalty is beyond compare and after all, a dog is the only thing on earth that loves you more than he loves himself! dogs see us as their friends and leaders, they’ll do anything in their power to ensure your comfort and safety.