企源知识库

The teacher didn’t know who ___________ for the broken glass.
A、is to blame
B、is going to complain
C、is prepared to criticize
D、is ready to teach
【正确答案】：A
【题目解析】：be to blame意为“该受责备，应负责任”用主动形式表被动意义。句中who是to blame的宾语，即疑问词 who与不定式to blame连用。