If you look on the bottom of the key and in the space there should be little tabs. They're there so that you can remove the keys to clean them. You SHOULD be able to just pop it back on - if you look underneath, see if you can find the little tabs and line them up with their holes, put the key back where it's supposed to be and just push straight down.
Some of my keys have little metal bars too, that that you have to slide though a little hole - so check for that as well. If any of the little tabs or pieces on the bottom of the key are broken, you can order a replacement key for about 3 dollars from eBay. Let me know if it worked!
If not, I'll take some pictures of my own keyboard to show you!
You can seek help from laptopkey.com good luck!
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.