George Bush______was a politician,like his son George W.Bush.

I'm afraid I'm not ___ to help with the show, for I am fully occupied with my own project

 Learning from _______ mistakes can help us stay cautious and make wise decisions in the days to come.

Both the summer and the winter Olympic Games are held every four years on a _______ basis.

Eat _______ cake you like and leave the others for _______ comes in late.