First time, I brought the copy of my I-485 receipt and the stuff won't accept it because it's not original INS document. It doesn't help when I present my EAD and the employment letter from the company. He insisted that I need to bring ORIGINAL INS document to prove my identity. Also he said if I bring the original receipt, he can renew my DL as if I already had GC. I've asked my lawyer to mail the original receipt otherwise, I can't even drive :)
Since I moved from another state to here, I can't renew online. But anyway, thank you guys so much for the help!