假定英语课上英语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限一词。

      2).只允许修改10处，多者（从第11处起）不计分。

    I was in the college when my father passed away. One evening, a man visited me and after a while, he asked of my studies. I told him I could not go to college so I did not want to study anymore. He reminded how my father had sent me to the best college in our city. Did I want to fulfill his father's dream or did I want to be calling a failure? I wept and said I do want to do my best and I just couldn't concentrate. He gave me all the encouragements I needed to be able to carry on. His calming, gently voice did wonders and I decided to study harder and complete my graduation early.

求证：△ABC∽△DAE．

呼吸运动的结果实现了（　　）

定义{a，b，c}为函数y=ax²+bx+c的“特征数”．