is going to be done ,is going to be doing 有什么不同?

题目

is going to be done ,is going to be doing 有什么不同?
is going to be done 打算做 is going to be doing 将要做 题目是：
The meeting is going to ----- at 8 o'clock next Monday.
A. be holding B. hold C. have been held D. be held

答案

D：be held
将来被动时
hold的过去分词和过去完成分词都是 held
会议无法自己举办自己
所以你要用：somebody hold something的形式
反之,你也可以把这句句子说成
We are going to hold the meeting at 8 o'clock next Monday.