estaban bostezando
-they/you were yawning
Imperfecto progresivo para el sujeto ellos/ellas/ustedes del verbo bostezar.

bostezar

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Estaban bostezando a unos de familias del sector de Brisas del Este.
Some families of the Brisas sector in the east were being bombed.
Palabra del día
el sastre