题目内容：

假定你是李华，你的加拿大籍笔友Rex最近因上课注意力不能集中而感到苦恼，来信向你求助。请你给他写封回信，表示安慰，并给出建议。要点如下：

1.写信目的；2.你的建议；3.表达祝愿。

注意:1.词数100左右

2.可以适当增加细节，以使行文连贯

3.开头语和结束语已为你写好，不计入总词数;

4.参考词汇：distraction 注意力分散

Dear Rex,

I’m really sorry to hear about your present situation.

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Good luck to you!

Yours,

Li Hua