Respuesta:
My brother isn't going to travel (not travel) to the beach on his next holiday.
He is going to stay (stay) home with his son.
He is going to play (play) with his son and watch TV.
His wife is going to travel (travel) to Loja to visit her family.
She is going to spend (spend) three days there.
When she's back, they are going to visit (visit) her mother.
They are going to look after (look after) my nephew for a few hours! I love that.
Explicación: