I went hiking to a mountain with my friends last summer. It was a good trip at the beginning but something unexpected¹ happened on the half way. One of my friends suddenly felt a terrible pain in his stomach and he couldn't move any further. Nobody knew what to do. One girl tried to call her mum with her mobile² phone but there was no signal in the mountain area.

　　Luckily we brought a tent with us. We put it up and let him rest in it. He took some medicine. Then he drank some water, and ate some food. After a while, he felt much better and we walked on. We all enjoyed ourselves on the top of the mountain.