下面短文中有10处语言错误，请在错误的地方增加、删除或修改某个单词。
删除：把多余的词用斜线（\）划掉。 
增加：在缺词处加一个漏字符号（∧），在漏字符号下边写出应加的词。
修改：在错的词下划一横线，在该词下边写出改正后的词。
注意：
1改错格式错误或改在试卷上一律不给分。 2 只允许修改10处，多者（从第11处起）不计分。
Climb the mountains was hard work but as we looked around us, we were surprising by the view. We seemed be able to see for miles. At one point we were so high that we found ourselves cycling over clouds. Then we began going down the hills. It was a great fun specially as it gradually became more warmer. In the valleys colorful butterflies flowed around us and we saw many yaks and sheep eaten green grass. At this point we had to change our caps, coats, gloves and trousers with T-shirts and shorts.