I went hiking to a mountain with my friends last summer。
　　It was a good trip at the beginning but something unexpected happened on the half way。 One of my friends suddenly felt a terrible pain in his stomach and he couldnt move any further。 Nobody knew what to do。
　　One girl tried to call her mum with her mobile phone but there was no signal in the mountain area。 Luckily we brouge 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。