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。错误涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏词符号（），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。
Having drank too much, Alfred was driving along the country road at top speed while his car ran into an old man who was walking across the road. After looking around and thinking there was not a single person see the accident, he drives off without taking the old man to the hospital. The old man was frightening but kept the car number on his mind. About one month late, they went to court. Alfred’s lawyer said:” Alfred is experienced driver of more than 20 years.” “ If experience can prove that, here, you see, the old man had walked safe for over 60 years,” the old man’s lawyer replied.