1. 根据语境从方框中选择恰当的短语填空，有的需要变换形式。

go walking, rock climbing, on one's own, lead the way, pay attention, keep together, begin with， get lost

1. （1） My dream is to travel around the worldone day.
3. （2） Make sure that youto what I say.
5. （3）  is a kind of sport. I like it very much.
7. （4） Some peoplein the forest last weekend. The police saved them.
9. （5） Don't worry. I willand you just follow me.
11. （6） If youand help each other, you will succeed.
13. （7） I oftenwith my friends in the mountains in our free time.
15. （8） The list of namethe letter A.