estuvieron sustituyendo
-they/you were substituting
Preterite progressive ellos/ellas/ustedes conjugation of sustituir.
See all conjugations of sustituir

sustituir

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5,000+ learners.
TRANSITIVE VERB
(to exchange)-to substitute
Synonyms for sustituir
reemplazar
to replace
relevar
to relieve
suplantar
to stand in for
suplir
to replace
canjear
to exchange
sustituir a
to replace
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