回複：F-1 I-485

I think to submit 140 or 485 have the same effects on students, for both indicate an intention of immigration, and will make a new F-1 visa not possible theoretically. But I think you can finish your current study as long as you keep your status. If you don't need I20 extension, there should be no problem. The International Student Office deals with I-20 extension and renewal, and I don't know if such things will be influenced by that