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：
这题考查冠词的用法：考查词组：apologize to sb for sth“为某事向某人道歉”，句意是：李刚被要求为他所做的事向出席会议的人道歉。选C。