回複：可否請教需準備什麽材料？多寫賜教

our original I-797 form
A copy of your H petition
You will also need a letter from your department that indicates you are still employed by your boss.


I think also you can prepare your some recent paychecks, your CV, something about the project you are working for.

I don't know whether I can go back yet. But good luck to you!