假定你是李华，经常帮助你学习英语的朋友Alex即将返回自己的国家。请给他写一封邮件，内容包括：
1．表示感谢；
2．回顾Alex对你的帮助；
3．临别祝愿。
注意：1.词数80左右；
2．可适当增加细节， 以使行文连贯。
Dear Alex，
I'm sorry to hear that you are going to return to your country very soon and I'm writing this email to express my gratitude for your help.
First of all, thank you for helping me learn English.Without your help, I would not have made so great progress in Englishlearning.Besides, what you told me about your country broadened my horizons and aroused my interest in foreign culture.
I wish you all the best in the future and have a good journey.
Yours，
Li Hua
