Yes, stretched ears can shrink up. How much you can get them depends on your body, how old the stretched are, and what size. The general point of no return is 2ga. Meaning that you can shrink up...
If you have a Windows computer, go down to the bottom of the screen (near the Windows icon and your web browser icon) and right click. Hit "task manager". Once you see your web page, hit "end...
your earing holes won't close if it's been longer than a couple years. (say maybe 2 years.) unless it's a cartilage, it might. it also depends if they have earrings in them or not..
It depends on your body. It will most likely shrink but it might not close completely. If its new, it obviously has a higher chance of healing completely.