that he was in great danger，Eric walked deeper into the forest．
A. Not realized
B. Not to realize
C. Not realizing
D. Not to have realized
网友回答
A. Not realized
B. Not to realize
(答案→)C. Not realizing
D. Not to have realized
解析：realize与本句的主语在逻辑上是主动关系，并且与主句中的谓语walked同时进行。