han refaccionado
-they/you have renovated
Antepresente para el sujeto ellos/ellas/ustedes del verbo refaccionar.

refaccionar

Además, se han construido 167 cocinas Lorena, 12 aulas y diez comedores, y se han refaccionado 15 aulas.
In addition, 167 Lorena kitchens, 12 classrooms and 10 dining rooms have been constructed, and 15 classrooms were repaired.
Palabra del día
la leña