Questions & Answers about Ons huiswerk is al af.
Because huiswerk is a het-word in Dutch: het huiswerk.
For singular het-words, the possessive our is ons:
- ons huis
- ons boek
- ons huiswerk
For de-words and for plural nouns, you use onze:
- onze auto
- onze tafel
- onze boeken
So:
- ons huiswerk = our homework
- onze huiswerken would only be possible if you were talking about multiple separate sets of homework, which is unusual.