假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，要求你在错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号（Λ），并在其下面写上该加的词。
刪除：把多余的词用斜线(＼)划掉。
修改：在错的词下划一橫线，并在该词下面写上修改后的词。
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。
Long before and far away, there lived a man with a dream. He dreamed building a magnificent marketplace in the middle of a Arabian desert. After a time, his dream city was built. The city walls were made by gold and covered with jewel. From far and near, traders went there to buy their fortunes. Yet one day the city suddenly disappeared, left no trace in the desert sands.
Does this city actually exist? Some people say it did exist. They point to a book of ancient folktales are called The 1,001 Tales of the Arabian Nights. Supposedly, some tales hold clues to its exactly location.
