Thank you all for your answers, Today, I went to Newark office, my appointment was at 1:00 pm. I arrived there around 12:00 pm. I parked my car at the parking lot next the immigration building (plenty of space). After passing the security check, I headed to the 13 floor, where the interview was. After waiting about 15 min. The security officer let us in to the big waiting room and told us to drop our appointment letters in to the box in front of the window and wait. Wait..Wait... Wait... and Wait..
Although my appointment was at 1:00 pm, literally I waited more than 3 hours. Around 3:30 pm my name was called. I was guided in to office and sworn before take the seat.
Then she told me that she doesnt have my A-file folder but just my temprorary file (naturalization application folder), since I moved recently and just had my condition(I-751) removed. So she told me she can not approve my application at this time. But she said we can proceed with the interview and wait until we recieved your a-file from the center. I asked her how long it will take to recive the folder, she said not that long and if I hadnt heard anything within 60 days, I should write an inquiry about my status.
Anyways, then she proceed with naturalization questions, current job, marital status, nationality etc. She took my passport and check for the travelings, and she told me that I should get my passport stamped if I plan to travel outside. She continued with the questions form the application form (have you been cited, been part of communist party and etc.).
Then she asked me few questions about history from 100 sample questions. They were easy and straight forward. She asked me to write a sentence "Nothing matters more than peace". And read a sentence which was very easy that I cant remember.
I signed few papers and photos. And that was it.
She checked the box "Decison can not be made at this time" and told me one more time that we should wait until she recieved my A-file from the center.
As I was thinking no more waiting but I guess waiting is my destiny..
Thank you all and best of luck to all of you..
PS. please let me know if anyone has gone through the same experience.