假设你是红星中学高三（1）的学生李华，为校刊英语园地写一篇题为“An Unforgettable Hike”的英文稿件。请根据以下四幅图的信息，叙述上周五你们学校组织的20公里远足活动的全过程。
注意:1．文章的开头已为你写好。
2．词数不少于60。
高三英语作文 An Unforgettable Hike 一次难忘的活动（远足）
An Unforgettable Hike
We took a 20-kilometer hike last Friday, and it has been one of the most unforgettable experiences since high school. _________________________________
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参考范文
We took a 20-kilometer hike last Friday, and it has been one of the most unforgettable experiences since high school.
Early in the morning, we got together and set out on foot. All of us carried backpacks with water and food. At the beginning, we enjoyed the beautiful scenery and had a great time. Gradually we started to sweat a lot. Some of us became out of breath and some fell behind, but we encouraged each other to keep going. We kept at walking and walking. We almost made it to school when one of my classmates fell down. All of us ran up to help her, having no time attend to our tiredness. After another hour, we finally managed to walk back to school. We were so pleased and proud, cheering and hugging each other. We took photos to record the exciting moment.
What an unforgettable experience! It’s more than a hike. It’s a journey of hard work and challenge, in which we’ve learnt to be more determined and strong-minded.