1) comienzo
2) puede
3) almorzamos (and it should be mexicano not mexicana )
4) juega
5) entienden
Answer:
a) el joven que vive alado del parque es mi amigo
I think what they want you to do is record yourself reading this story in Spanish.
The only option that makes sense is the second one, due to the fact that she doesn't want to. In another words the sentence will be the following: No, me duelen las piernas.
i hope i helped