问题补充:
The teacher apologized late.
A. to his students to arrive
B. to his students for arriving
C. at his students to arrive
D. at his students for arriving
答案:
A. to his students to arrive
(答案→)B. to his students for arriving
C. at his students to arrive
D. at his students for arriving
解析:考察apologize后介词用法。Apologize后介词to表示道歉的对象,for表示道歉的原因。根据句意:老师为迟到向学生们道歉。选B。