你知道火车站怎么走吗？

Do you know ___where the train station is?

这是我们项目开始遇到困难的地方。

This is ___where our project started to encounter difficulties.

我们从上次停下的地方继续讨论。

We'll continue ___where we paused last time.

这些新鲜水果是从哪里来的？

___Where did these fresh fruits come from?