请问下句怎么翻译，其中in which是引导什么从句呢？

As so often,the past holds the key to the future :we have now identified eough of the long-term patterns shaping the history of the planet,and our species, to make evidence-based forecast about the situation
in which our descendants will find thenselves.

常常是这样，过去是打开将来之门的钥匙。现在我们对于这星球以及我们人类，已经辨识了足够形成历史的模式的知识，并以该等证据为前提预测我们将来的后代藉以生存的模式。
in which 引导定语从句，修饰situation

答案是： 1.do you know the girl who is sitting over there ? 2.the man who i met in the street yesterday is my old friend 3.i like the music that  i can dance to 4. do you know the teacher who is very  serious ? 5.please write down the sentences that you hear   ~手工翻译，尊重劳动，欢迎提问，感谢采纳~