Keyboard shortcuts are not working

I know i posted the question before and i tried suggestions and still not working, so my question is :
I installed Zorin pro. Do you think i should try different distro? Or the MacPro 2012 laptop is not compatable?
Anybody have success installing any distro that works on Mac laptop?
I only looking for simple keys to work, like copy and paste, screenshot, and spell check, i cant live without it, so if i have to dump Zorin i will, just want to know, thank you very much