1 . Good habits ________ (形成) at an early age will benefit you a lot in your whole life. （根据汉语提示单词拼写)

2 . 一个由12个国家签署的条约使得南极成为世界上最大的自然保护区，这结束了南极归属谁的争端。
A treaty ________ by 12 countries made Antarctica the world's biggest nature ________, ________ ended arguments about ________ owned the land.

3 . 无论我们看上去有多么不同，无论我们来自哪里，我们本质上是一样的，每个人都是平等的，我们密切相连。
________ ________ we may appear to be, ________ we come from, we are all the same, all equal, closely ________.