问题
选择题
I really didn’t know who____ for the broken window, for none of them admitted that he had done it.
A．to be blamed
B．is blamed
C．to blame
D．being blamed
答案
答案：C
这题考查词组：be to blame“应受责备”，句意是：我真不知道打坏的窗户要责备谁。因为没人承认谁做了。选C。