I apologize I don't think that we will go to this exhibition.到底是他们去不去这个展会啊?

I apologize I don't think that we will go to this exhibition.
到底是他们去不去这个展会啊?

不去
will说明他是不赞同去的.

应译为：抱歉，我想我们不应该去展览会。
呵呵