短文改错(共10小题; 每小题1, 满分10分)
文中有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11处起)不计分。
Last Sunday I went to Beijing National Stadium. At gate I happened to meet some young America tourists. I greeted to them in English and then we began to chat. From the chat I learned that they were college students traveling in Beijing but most of them were fond of Chinese culture. They were busy taking pictures and they seem to be much impressed by the changes which had been taken place in the past few years. After come out of the Stadium, we went to the Water Cube and had a good time there. We exchanged our email address so that we could keep touch with each other later. They thanked us again and again. I was very glad to have the chance to practise my oral English.