1. It was ______ (possible) that he forgot my birthday party; he must have stayed away on purpose.
2. If you thought Bob intended to be impolite, you were ______ (mistake).
3. The instructions were so ______ (confuse) that I did it all wrong.
4. The president is the most ______ (power) man in America. 
5. David is 2.36 meters tall. His ______ (high) makes him stand out in the crowd.