1. I m writing this letter to express my sincere gratitude to you for teaching me the English song.
2. Without your help, the performance couldn t have been that successful.
3. I d like to express my thanks for your hospitality and kindness when | was in America.
4. In addition, what has impressed me most is…
假定你是李华，从小喜爱大熊猫 (panda)，一直通过有关网站 (website)关注三年前在美国圣地亚哥动物园出生的大熊猫“苏琳”和她的母亲“白云”。现在苏琳即将三岁。请根据以下要点给动物园工作人员写一封信：
Greetings from China!
This is Li Hua, a student in China，I ve been fond of pandas since my childhood. Since three years ago, when the panda Baiyun gave birth to a baby panda Sulin, I have been visiting your website to keep myself informed about how things are going for them. If Iremember clearly, she will turn three soon. I want to say happy birthday to her and express my thanks to you for your hard work, with which she has been brought up and has been living happily with her parents in the US.
By the way, I wonder if I could have a photo taken of Sulin on her third birthday. Thank you very much in advance.