Needing help desperately

So…I am writing my first story and then I saw something which it calls ParserError which I cant understand.In Script Tools,in Errors is written;Unexpected block end:Did you forget the { which goes with this } ,or forget to put word the “choice” at the start of this choice option?
So I put a word choice put again. That error always shows. Can someone please tell me what I am doing wrong and how I can do it right? Thanks.

Can you post your script?

Its long but I will try it. Its about advanced choice. If/elif/else

Not like a full script… just the part with if/elif/else where your error pops up