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：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。

删除：把多余的词用斜线（＼）划掉。

修改：在错的词下划一横线，并在该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．只允许修改10处，多者（从第11处起）不计分。

Last Sunday, my friend and I was taking a walk on the playground when a girl came ride a bike at a very high speed. Then we heard a loud scream, that attracted our attention. We turned around and saw the girl struggling her feet, crying out for help. My friend and I rushed towards her as quick as we could and I had helped her to stand up. Therefore, the girl rode away immediately without saying "Thank you". I felt disappointing at her behavior. To my surprise, the girl came back with hot drinks several minute later. Seeing this, I knew I had misunderstood her and felt ashamed of me.