Final-Answer:
The four words that have been misspelled are:
* priviledge
* either
* embarrassing
* knowledgeable
The correct spellings are:
* privilege
* everyone
* embarrassing
* knowledgeable
The sentence should read:
We didn't give him the privilege of representing us on the District Environmental Committee because he has a tendency of disagreeing with everyone. He embarrasses himself by pretending to be so knowledgeable. ^