Learn Dutch: Onze papa en mama zijn thuis. - Our dad and mom are at home.

The word for "our" has two forms in Dutch: ons and onze. We use ons with singular het-words, and onze with de-words and all plurals. Because papa is a de-word (de papa), we use onze.

Does Onze cover both papa and mama in this sentence?

Yes. Just like in English, you can put the possessive adjective once at the beginning. Because both papa and mama are de-words, onze grammatically fits both. If one of them was a het-word, you would have to add ons before it (for example: Onze papa en ons kind).

Why do we use the plural verb zijn when papa and mama are singular people?

zijn means "are". Even though a dad is one person and a mom is one person, together they form a plural group ("they"). Whenever you connect subjects with en (and), they become plural, so you must use the plural verb zijn instead of the singular is.

Why is there no word for "at" before thuis?