假如你是李华，想参加中英交换生的活动，请根据活动要求写一封自荐信。内容包括：
1.英语水平
2.身体状况
3.沟通能力
注意：1.字数100左右；
2.可以适当增加细节，以使行文连贯。
Dear sir ,
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Yours sincerely,
Li hua
