Li Gang was required to apologize the people present at the meeting what he had done .
A. for ; by
B. with ; about
C. to ;for
D. at ; with
网友回答
A. for ; by
B. with ; about
(答案→)C. to ;for
D. at ; with
解析：考查介词：句意：李刚被要求因为他做的事情，向到会的人道歉。Apologize to sb. for sth因为某事向某人道歉，选C。