科学家提出：如果许多人聚合在一起就某个问题各抒己见、相互交锋，就可能经过思维的碰

假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的一篇作文。文中共有10处语言错误， 要求你在错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号（∧），在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
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11处起）不记分。

例如：It was very nice to get invitation to spend ∧ weekend with you. Luckily the ﹨   I was completely free then, so I’ll to say “yes”. I’ll arrive in Bristol at around 8 pm in Friday evening.   am                                                             on

On Monday morning, I was on my way to school when suddenly as I saw a boy knocked down
by the car. In a hurry, I ran over and found the boy was serious hurt with much blood on his face.
Immediately, I call an ambulance and the boy was taken to the nearest hospital. For my relief, the
boy was fine and would recover in a few day. I went away without leaving his name. I was late for
class, and I felt happy for what I had done. As a proverb says, “Help others is the source of happiness.”
I feel our duty to make the world a better place to live in.