1 . 假定英语课上老师要求同桌之间交换修改作文, 请你修改你同桌写的以下作文。文中共有10 处语言错误, 每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在漏字符号（/\）下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在划横线的词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；2. 不得改变原文意思。

Yesterday I visit the Hong'en Temple Park with my friends. The park was full of beauty flowers. When I were enjoying the wonderful scenery, something unpleasant caught my eye. A young couple on the grass were eating, talking and laughing loud as if they were the only people in the world. What's worse, they even threw rubbish onto the grass, without see the sign "No littering” nearby. What a shame!

Such behavior left me in thought. If all visitors do as the young couples did, the park will be severely polluting and soon turned into a huge dustbin. I think both of us should mind our behavior in the public places. Only in this way can we live more comfortable and beautiful surroundings.