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l1处起）不计分。
Mr. Smith is a traffic policeman, that works very hard. One day, Mr. Smith as well as his wife were taking a walk along the seashore. Suddenly he heard cry, “Help! Help!” Follow the direction of the cry, he saw a drowning man struggling in the water. Without hesitate, he threw off his coat, jumped into the waves, and swam to the man so fast as he could. Finally he was able to grasp the man by the arm and pulled him through the waves until he reached in the shore. His wife ran up to help the man. She was too exciting to say a word. All the people there crowd around Mr. Smith. They cheered him and raised them high in the air.