书面表达。
假设你叫李华，在暑假期间你参加 了学校和美国某机构联合主办的为期20 天的中国英
语夏令营活动。在活动期间，你提高了口语水平，了解了更多美国文化并与外交Peter 结下了深厚的友谊。眼看Peter 即将回国，请根据以下要点给Peter 写一封感谢信。
要点：1. 感谢Peter 在此期间对你的帮助；
2. 在本次夏令营活动中的收获；
3. 对老师的美好祝愿。
注意：1. 词数：100 个左右；
2. 信的开头已为你写好（不计入总词数）。
Dear Peter,
I'm writing to express my thanks to you. _______________________________________________
________________________________________________________________________________
One possible version:
Dear Peter,
I'm writing to express my thanks to you. You are both my teacher
and my friend. My English has improved greatly thanks to your creative
help. At one time, I was too shy to speak English, especially in front of
others. It was your encouragement that helped me overcome my
difficulties and enabled me to express myself clearly. Now I've become
more outgoing, and of course I speak English much more fluently.
I'm also grateful for the summer camp at which I got to know you. I
learned a lot about American culture there, and will always remember
the days we spent together. I hope we can be friends forever.
Best wishes to you, and have a nice trip.
Yours truly,
Li Hua