Give the correct form of the words in brackets

IV. Give the correct form of the words in brackets. 
1. What he has said about me is _________wrong. (absolute)

2. It cannot be denied that English has become an ____ language of the world.(nation) 

3.  Don’t drink that water, it’s ______________. ( Contaminate)  

4. The Statue of Liberty in Upper  New York Bay of America _____(symbol) the freedom.