1. "Life is like a mountain." Discuss.
As you go through life, you find that it keeps peaking and peaking. There are always places to rest, but once you get to the top, it's all downhill from there.
2. "Life is like a river." Defend.
It moves continually, can sometimes throw you a curve you weren't expecting, has eddies and swirls and the occasional pocket where it's calm, but also has rapids (sometimes unexpected ones!). Often other rivers join together to make a mighty one, stronger than the one alone. And it all flows down into the sea.
3. "Life is like an open plain." Explain.
It's full of potential. Oh, I have no bloody clue.