题目内容：

假设你是高二学生李华，你所居住的城市正在争创全国文明城市（National Civilized City），作为一个有责任心的市民，你注意到了两个有待改进的现象，即共享单车（shared bike）随意摆放；行人车辆时有抢道。请你给市长写封信，建议关注这两个问题并提出你的相应整改措施。

注意：开头结尾已给出，不计入总词数。

Dear Mayor,

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Yours Sincerely,

Li Hua