Complete the dialogue below: —¿ellos son tus abuelos? —s; í, él es mi y ella es mi

The answers would be "abuelo" and "abuela".

The question, translated into English, reads:

—Are they your grandparents?
—Yes, he is my and she is my .

As "abuelo" is the term for a masculine grandparent (or "grandpa"), it would go in the first blank, and "abuela", being the feminine equivalent ("grandma"), would go in the second.

Abuelo goes on the first box and Abuela goes on the second one

The term  falles  refers to both the celebration and the  monuments  burnt during the celebration.. so i believe the monuments are the ones being burnt. but just to let you know ' fallas ' is a term. ^.^