How can i remember the answers?

I have a test later, there's 20 questions roughly but they're all quite hard with hard spelling. I don't have long to remember all the answers. Whats a good way to remember them!? If I fail I have to go through everything again..

repeat them and then write them down twice. thats what I do for spelling tests or definitions.
you could also try to remember small words within the word or a certain letter.
they worked really well for me! I hope it works for you too.