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。每处错误仅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：在错的词下画一横线，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。

Dear Bob, I’m writing to apologize for having forgotten to return The Beatles CD to you when I left Canada. I was in such hurry that I packed everything in my luggages without checking carefully. If I have paid more attention then, I wouldn't have made such stupid a mistake. Now everything must be done to solve the problem because I understand you cherish the CD enormous. I can either send it to you by express mail or alternatively compensate you in a reasonable price. If you do not mind, I may bring it back to you next time when I go to Canada. Please let me know which solution you prefer at your earliest convenience. Felt extremely guilty, I really hope you will accept my sincerely apology.