He said that we should protect the ancient civilization from .
A. losing
B. lost
C. being lost
D. to lose
网友回答
A. losing
B. lost
(答案→)C. being lost
D. to lose
解析：考查词组：正确结构为protect...from doing保护…免受…。由于ancient civilization与lost之间是逻辑上的动宾关系，要用被动语态，句意：他说我们应该保护古代文明不被丢失。于是选C