I was deeply impressed with the man’s willingness .
A. by chance
B. to take chance
C. to take chances
D. taking chances
网友回答
A. by chance
B. to take chance
(答案→)C. to take chances
D. taking chances
解析：“这人的冒险精神给我留下很深的印象。”the willingness to do sth 愿意做某事，take chances冒险，答案C。