Answer:
Where is the rest of the question?
Explanation:
De vez en cuando pagaba las cuentas del hotel con tarjeta de crédito.
Answer:
I THINK it might be all of the above, because none of those are past tense. I'm not sure though, don't count on me.
Explanation:
The word entiendo is the present form of entender in the first person singular. It means 'to understand'.