They worked arduously. Their work was hard but pleasant. Trabajaban arduamente. Su trabajo era duro pero agradable. The secretaries were working in the office. Las secretarias trabajaban en la oficina. The girls were working in the office yesterday. Las muchachas trabajaban en la oficina ayer. He must know him. They used to work for the same company. Lo debe conocer, Antes trabajaban en la misma compañía. But you don't work together? ¿Pero ustedes no trabajaban juntos? Two people have died this Saturday while working in the extintion of the fire. Dos personas han fallecido este sábado mientras trabajaban en la extinción de incendios. One dead worker and another injured while they were working on the building. Un trabajador muerto y otro herido mientras trabajaban en el edificio.