問題詳情：
假定英語課上老師要求同桌之間交換修改短文，請你修改你同桌寫的以下作文，文中 共存10處語言錯誤，每句中最多有兩處，每處錯誤僅涉及一個單詞的增加、刪除或修改。
增加: 在缺詞處加一個漏字元號（^），並在其下而寫出該加的詞。
刪除: 把多餘的詞用斜線 () 劃掉。
修改: 在錯的詞下面畫一橫線，並在其下面寫出修改後的詞。
注意：1. 每處錯誤及其修改均僅限一詞；
2. 只允許修改10處，多者（從第11處起）不計分，
When I was having lunch in a restaurant, I noticed a young man. Dressing in black, he was playing with a smartphone while eating. She smiled at everyone that walked by. All of a sudden, a boy ran into him, making some food dropping on his trousers, what I thought would make him annoyed with the boy. Instead, he laughs it off when the mother made the apology to him. “Never mind!” he said polite. Seeing this, I touched and appreciated the kindness he brought to the world. On the way out, I handed to him a Smile Card which said, “Best wish and good luck to you!”
【回答】
知識點：其他
題型：短文改錯
