问题详情

Which of the following italicized parts is an appositive clause(同位语从句)？

A．He said that he had seen the film yesterday.

B．Give me your promise that you will go shopping with me tomorrow.

C．It is obvious that you made a big mistake.

D．The trouble is that I have forgotten the name of the visitor.

请帮忙给出正确答案和分析，谢谢！