se abrieron

opened

→ se
phrase Rare #39,660
opened Used with plural subjects; se can indicate that something opened on its own or was opened.
SP: Las ventanas se abrieron con el viento.
EN: The windows opened in the wind.

Las puertas se abrieron solas.

The doors opened by themselves.

Fue esa noche cuando se abrieron mis ojos.

It was that night that my eyes were opened.

Se abrieron camino entre la multitud.

They made their way through the crowd.

Las puertas del ascensor se abrieron.

The elevator doors opened.

La campana sonó y las puertas se abrieron.

The bell rang and the doors opened.

Tom y María se abrieron paso entre la multitud.

Tom and Maria made their way through the crowd.

Se abrieron sesenta nuevos museos.

Sixty new museums were opened.

Las nubes se abrieron y se asomó el sol.

The clouds parted and the sun peeked out.