Respuesta :
Answer:
1) Ascensores (-es)
2) Almunas (-s)
3) Comedores (-es)
4) Garajes [(-s) But to be honest, take off the e, and add an -es.]
5) Puertas (-s)
I sadly don't have an explanation, as I grew up speaking Spanish, so I don't know the rules why, I just know that this is it.