求一篇英语作文假如你是李华.刚参加完 美国高校一周游 的夏令营活动.在离开之前想给新交的美国朋友Monica写一封感谢信
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Dear Monica,

I am so glad to make a friend with you . Thank you for all you help . After the summer camping , I got one thing is that it is very important we should be unit . When we are...