问题补充：
The father stood up in order to protect his 15-year-old son, saying that he was not the one .
A. blamed
B. blaming
C. to blame
D. being blamed
答案：
A. blamed
B. blaming
(答案→)C. to blame
D. being blamed
解析：这题考查词组：be to blame：应受责备,不定式to blame做定语，句意是：爸爸站起来为了保护自己15岁的儿子，说他不是应受责备的人。选C.
