estaban tiritando
-they/you were shivering
Imperfecto progresivo para el sujeto ellos/ellas/ustedes del verbo tiritar.

tiritar

Popularity
3,000+ learners.
¡La temperatura era tan baja que hasta los peces estaban tiritando!
The temperature was so low that even the fish were shivering!
Palabra del día
la cabina de mando