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Question

In this sentence how come proveyeron can not be used . . .  Why proveísteis ? ? ?Juan y tú ________ con dorsales a los participantes en la carrera.Juan and you provided the numbered bibs for the participants in the race.(HINT: Conjugate "proveer" in Pretérito indefinido)

Answer

Hola CarlitosThe question is showing a plural you subject (Juan y tú), this is why we need the "vosotros" form of the verb. I added that note to the hint (that we are referring to "vosotros", not "ustedes") Kwiziq is still basing its content (especially questions) on European Spanish. We are soon offering the option to avoid questions using vosotros, for our Latin American Spanish learners, so students will be able to "skip" the questions related to this pronoun that is not used in Latin America. SaludosInma