Final answer:
The verb pair that completes the sentence is 'pagué' (I paid) and 'pagó' (he paid).
Step-by-step explanation:
The verb pair that best completes the sentence is pagué (I paid) and pagó (he paid).
So, the complete sentence would be: Yo pagué con la tarjeta y él pagó con dinero en efectivo.
This verb pair is used to indicate different actions of paying, where the subject of each action is clearly stated.
Learn more about Completing a sentence with the correct verb pair in Spanish