Dün buraya koyduğum kitaba ne oldu? - What happened to the book I put here yesterday?
Dün buraya koyduğum kitaba ne oldu?
What happened to the book I put here yesterday?
Bana ne olduğunu tahmin etsene! - Guess what happened to me.
Bana ne olduğunu tahmin etsene!
Guess what happened to me.
... detect that something bad has happened and ...
... so that when it's changed out, you can tell at a glance that it's happened. Then, if you ...