问题
选择题
The boy was caught_______ in the examination and was punished by the teacher.
A．having cheated
B．cheated
C．cheating
D．cheat
答案
C
题目分析：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。