题目内容：

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：在缺词处中加一个漏字符号（^），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11处起）不计分。

Last summer, I got a part-time job as a waiter. I worked hard and very helpful. Everyone in a restaurant including some regular customer liked me. One day, a foreign couple in their fifties entered into the restaurant. I was happy to have a chance to practise their spoken English. I went up to greet them warm. After I took their order, I told them their food will be served quickly because we Chinese respected the elderly. Heard my words, a look of displeasure appeared on the wife’s face. Seeing my confusing look, her husband explained to me the westerners disliked the description “old”. I apologized to them but realized the importance of knowing cultural differences.