Questions & Answers about Ni kontrolis la valuton kaj la kurzon.
Because -is marks the past tense in Esperanto.
- kontrolas = checks / is checking
- kontrolis = checked
- kontrolos = will check
So Ni kontrolis... means We checked...
The -n ending marks the direct object in Esperanto. It shows what was checked.
In this sentence:
- Ni = we
- kontrolis = checked
- la valuton = the currency
- kaj = and
- la kurzon = the rate / exchange rate
So both valuton and kurzon are things being checked, which is why both take -n.