下面短文中有10处语言错误。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. 每句不超过两个错误； 2. 每处错误及其修改均只限一词； 3. 只允许修改10处，多者（从第11处起）不。 My parents and I went to the park on last Sunday. There were lots of visitors stood in front of the ticket window. We waited a long time and buy three tickets. In the Tiger Mountain of the park, I was too eager to see the fierce frightened animals that I quickened my steps through the crowd. Unfortunate, I got separated from my parents. I had hard time looking for him, but I had no luck. Wandering in the park, I felt alone without any companions. Worse still, I had no money, so I had to walk home, covered as much as 5 kilometers.