Martin es guapo
explanation: Martin stays the same because it's a name, "is" in spanish becomes "es" and "handsome" in spanish is "guapo" (at least where i am from)
Answer:
Maria abre (abrir) las ventanas.
Carols y yo discutiamos (discutir) las noticias.
Juan vive (vivir) en las afueras.
Explanation:
I think its either Mi, su or Mi,suya
