问题补充:
The boy was caught in the examination and was punished by the teacher.
A. having cheated
B. cheated
C. cheating
D. cheat
答案:
A. having cheated
B. cheated
(答案→)C. cheating
D. cheat
解析:考查现在分词做主语补足语:句意:男孩被抓住考试作弊,被老师惩罚。Catch sb doing是抓住某人正在做…,这里是被动式:Sb be caught doing,现在分词做的是主语补足语,选C。