IO was pretty straight forward with the questions. She asked me and my husband to seat in front and my son (age 12) in the back, he will not be interviewed as he is under age 14.
*IO checked original docs (ie., Birth cert and Marriage Cert) and passports
*IO went over all information on I-485.
*Very first and most recent entry in the US (presented I-94)
*IO asked principal applicant about previous visas (ie., J and H visas) and employers. Presented visa/extensions for each employer.
*IO went over Part 8 (General Eligibility and inadmissibility grounds) we were asked to answer YES/NO
Finally, IO stamped our form I485, handed us a letter that said "USCIS is unable to complete your case at this time. Your case is being continued until a final decision can be made"and was told to check receipt number on the website (At this point, I was really nervous as the IO's statement was very vague).
I checked my case on the website right after the interview, the case was updated to "New Card Is Being Produced" :-)