Answer:
3) Radioactive material in the Garigliano River (made) underwater searches there dangerous. - past 
4) Many students of archaeology (will have) completed an archaeological dig by graduation. - future perfect
5) I am happy __ Leonardo da Vinci's Mona Lisa - To have viewed
6) Da Vinci was one of the most interesting artists __ during the Italian Renaissance. - to have lived
hope this helps
Explanation:
 
        
             
        
        
        
Those books were written by Homer.
        
                    
             
        
        
        
Answer:
General Westmoreland is right in his statement.
Explanation:
General Westmoreland means that in war fear of death is present in every individual even in a brave people. In war, fear is hidden in the courage showed by the people. There is no one who can't fear in the war because everyone knew that there is a possibility of death or injury in the war. But in the war, people hid their fear through courage so that's why General Westmoreland was right in their statement about fear.
 
        
             
        
        
        
I would say B. Hope i could help