estuvieron supervisando
-they/you were supervising
Preterite progressiveellos/ellas/ustedesconjugation ofsupervisar.

supervisar

Howe-Baker afirmó que del 6 de agosto al 10 de diciembre de 1990 estos empleados estuvieron supervisando los lugares del proyecto.
Howe-Baker asserted that from 6 August to 10 December 1990 these employees were supervising job sites.
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