假如你是高三学生李华，你校正在组织寒假赴英冬令营营员选拔活动。冬令营由英国文化委员会（British Council）组织，营地在剑桥大学(Oxford University)。请根据以下要点给你的英国笔友John写一份电子邮件：
你很感兴趣，认为机会难得。
家人反对及其反对的理由。
希望John给出建议。
注意：1．词数120---150
2．可适当增加细节。
Dear John,
How is everything going?
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