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一篇作文。文中共有10处语言错误，每句最多有两处。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（Λ），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。

Dear Mary,

    It's quite some time since I was last received your letter. I really miss you. Now I have a problem and I am writing to you for some advices. One day my deskmates was looking for her dictionary everywhere, but she couldn't find one. Then she thought I had taken her dictionary. Usually I didn't get on very well with him. No matter how hard I explained her this time, she wouldn't listen. What's more, she told others that I have taken her dictionary. But I am very unhappy recently. I haven't taken her dictionary and I really don't know what to deal with such a problem. Write to me as soon as quickly if you are free.

                                                                                                                                                                     Best wishes,   

                                                                                                                                                                            Li Hua

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