Question

¿Por qué no ______ venir ustedes ayer? A. puede B. pudo C. pudieron D. pueden

Answer 1

C) pudieron. Ayer means yesterday and this should be conjugated in plural preterite.

Answer 2

Answer:

Por qué no pudo  venir ustedes ayer

B, would be the answer, because it makes the most sense and it fits the sentence.

Hope this helps! :)

Answer by

Fishylikeswater