假如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 Joy.

    How are you doing? Here is an exciting news for you. There will be an invention competition in our school in the 20th of October. However, there is a rule the participants shall be in a group. But I'd like to invite you to be my partners.

    I know that you have been longed to design a tiny cooler that people can wear around the wrist. I think it will be a wonderfully idea for the competition. We can make a small air conditioner to controlling the temperature of the wearer.

    How do you think of my suggestion? Looking forward to you reply.

Yours,

Zhang Xin