No, cuando fui a la tienda la oferta ya (terminarse) y no tengo mucho dinero ahora. (pretérito perfecto o el pluscuamperfecto)

No, cuando fui a la tienda la oferta ya había terminado y no tengo mucho dinero ahora.

Explanation:

No, when I went to the store the offer was over and I don't have much money now.

The past perfect past tense (from Latin plus quam perfectum, "more than perfect"), or antecopreterite in some countries, indicates a past action that occurred before another one also passed, that is, prior to another past tense. ("When I arrived, I was already dead").

this question is given using the conditional form. conditional tenses are is used when talking about hypothetical situations and probabilities. also, this is used when making polite requests. so comprarías is the conjugation of the verb comprar that matches the second person singular in the conditional. finally:

¿cuál comprarías tú?