habían gemido
-they/you had moaned
Past perfectellos/ellas/ustedesconjugation ofgemir.

gemir

Incluso ahora se estremecía al recordarlo, cómo los zombies habían gemido y aullado, y los médicos habían corrido un gran riesgo al intentar ayudarles.
He shuttered even now to think of it, how the zombies had howled and moaned, and the doctors had put themselves at grave risk in an attempt to help them.
Word of the Day
to boo