This nation has defeated tyrants and （）death camps, raised this lamp of liberty to every captive land.
A.overseen
B.enforced
C.liberated
D.unsung
正确答案：liberated
This nation has defeated tyrants and （）death camps, raised this lamp of liberty to every captive land.
A.overseen
B.enforced
C.liberated
D.unsung
正确答案：liberated