Resposta:
Existem alguns erros neste parágrafo.
Gramaticalmente correto ficaria assim:
Caio is happy, his dream is to be a football player. He livres in São Gonçalo do Amarante. He has two brothers. Caio is studying in the school of the city. His father is a dentist and his mother is a teacher. His brothers are studying Medicine. Caio likes to go out on saturday night with his family to eat pizza. Caio takes care of a dog he found on the street his name is Rex. Caio likes his family.
Explicação:
