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，每个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.每处错误及其修改仅限一词。
2.只允许修改10处，多者（从第11处起）不计分
When I was ten years old, I went to Yangzhou with two American．I became their guide．First, we went to the Shouxi River．They wanted to look around the river by the boat．After buy the tickets, we got into a boat．We went around seeing the beautiful sight．After that, we went shopping．The sellers couldn’t spoke English．Though it was very harder, I tried my best listen to their words carefully and translate the sentences．They bought some little things with their help．Next, we went to a small zoo but took some pictures．When we felt hunger, we went out and had lunch．After lunch, we visited some old house and learned more about Chinese history．