had been brawling
Pasado perfecto progresivo del verbo brawl.

brawl

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500+ learners.
When they felt the two armies had been brawling long enough, they gave the command to retreat, and with their armies they marched back home.
Cuando decidieron que los dos ejércitos se habían vapuleado lo suficiente, ordenaron que se retirasen y se marcharon a su casa.
Palabra del día
la raíz