Had my combo interview last Friday (4/24) and I got approved. I answer the first 6 questions correctly so the officer didn't ask the rest anymore.
6 questions:
1. What does a senator represent?
2. How many senators are there?
3. Where is Statue of Liberty located?
4. Who is your representative?
5. How many years do you elect a representative?
6. Who is the father of the country?
Reading: Where is the capital of the US?
Writing: The capital of the US is Washington DC
My husband wasn't asked to join me in the interview. The officer asked a lot of questions regarding my marriage and other details like the date when my green card was issued (even though he had the card at that time). They asked for a copy of our house closing documents and our house deed. He was pretty poker-faced the whole time. As long as all your documents are in order and you reviewed your files and general relationship questions, it should be fine.