题目内容：

假定你是李华，正在英国某中学做交换生。你从网上看到一则广告：布朗先生要找一个人周末帮助他照看宠物狗。请根据下面的要点提示，给他写封信询问有关事宜。

1．写信的目的；

2．说明你的优势；

3．询问工作相关事项。

注意：1．词数100左右；

2．开头和结尾已给出，不计入总词数。

Dear Mr. Brown,

My name is Li Hua.

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I am looking forward to hearing from you soon.

Yours,

Li Hua