单选题 Which of the following italicized parts is used as an object?
A. I don't mind her being invited.
B. Being criticized in class is an insult to me.
C. He insisted on being kept waiting outside.
D. The problem being discussed is very important.

【正确答案】 A
【答案解析】[解析] A项句意为“我并不介意她受到邀请。”，动名词的被动态在句中作宾语；B项句意为“在课堂上受到批评对我来说是一个侮辱。”，动名词的被动态在句中作主语；C项句意为“他坚持要在外面等候。”，动名词的被动态在句中作介宾；D项句意为“正在讨论之中的问题是非常重要的。”，现在分词的被动态，在句中作定语。故选A。