下面短文中有10处错误。请在有错误的地方增加、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，并在该下面写出修改后的词。
注意：
1. 每句不超过两个错误；
2. 每处错误及其修改均仅限一词；
3. 只允许修改10处，多者（从第11处起）不计分。
Li Ming went to the park on last Saturday afternoon after he had already finished his homeworks. He saw several boys skate on the pond happily. Suddenly he heard a cry for help. Looked ahead, he found one of the boys falling into the water. Li Ming jumped into icy water immediately and tries to pull the boy to safety. Then the boy was given first aid but soon came to myself. The boy’s parents came soon after they accepted the phone call. They were much thankful to Li Ming, who was trembling there with cold.