estaban elevando
Imperfecto progresivo para el sujeto ellos/ellas/ustedes del verbo elevar.

elevar

Las Sierras se estaban elevando y los Montes Shasta, Hood y Rainier estaban empezando su carrera.
The Sierras were elevating; Shasta, Hood, and Rainier were beginning their mountain careers.
Las Sierras se estaban elevando; los Montes Shasta, Hood y Rainier empezaban a convertirse en montañas.
The Sierrasˆ were elevating; Shasta, Hood, and Rainierˆ were beginning their mountain careers.
Las Sierras se estaban elevando; los Montes Shasta, Hood y Rainier comenzaron a convertirse en montañas.
The Sierras were elevating; Shasta, Hood, and Rainier were beginning their mountain careers.
Los continentes se estaban elevando en todo el mundo a medida que los fondos oceánicos se hundían.
Land was rising all over the world as the ocean beds were sinking.
Palabra del día
la tormenta de nieve