Below is the entire RFE.
Your application is missing proof that you were lawfully admitted to the United States as a nonimmigrant prior to fining for adjustment of status. You must submit a copy of the form I-94, Nonimmigrant Arrival/Departure Record, issued to you upon your last admission to the U.S. as a nonimmigrant (not parolee) prior to fining your form I-485. Please copy both the front and back of the Form I-94. If your form I-94 is not available, you must explain what became of it and submit a copy of all pages from your passports, including the biographic information pages and nay stamps or endorsements by immigration officials establishing your admission(s) or parole(s) into the U.S.
From this, could you please tell me what they really want? In my original submission, I have submitted a copy of all my I-94 cards including those detached from H1B approval notices and those issued when I came to the U.S. from China. The issued I-94 cards are just two: Parolee (December, 2007) (using advanced parole based on my first green card application, at the end, the application was denied due to failure of I140(NIW)) F1 (July, 2002) (this is my first time to enter the US as a graduate student) It seems that they need the I-94 card of F1 (July, 2002). Is that right? If right, USCIS should find this one in my original submission. This is confusing me.