假如你是李华,昨天学校为你们举办了18岁成人宣誓仪式.请根据下列要点给你在美国的笔友发一封电子邮件,描述宣誓仪式过程并简述你的感受.
要点:1.宣誓仪式;2.感谢家长和老师的培养和教育;3.老师送贺卡;4.表演节目
注意:1.邮件必须包括以上要点,可适当发挥;2.词数:100字左右;开头已为你写好.
参考词汇:宣誓make an oath

Dear Tom,
It's great to receive your e-mail. Now I'd like to tell you something that took place in my school yesterday.

Yours truly,
Li Hua

Possible version:

Dear Tom,
It's great to receive your e-mail. Now I'd like to tell you something that took place in my school yesterday.
In the afternoon we held a grown-up ceremony for our coming 18-year-old birthday. At first we made an oath that as grown-ups we should have a sense of duty/responsibility for our society from now on. Then we showed our thanks to our parents who had gone through hardships to bring us up and teachers who have been educating us patiently. And our teachers also gave us cards expressing their good wishes to us. Finally we put on wonderful performances, singing and dancing. We learned a lot from the activity. I think it's very important for us. I will never forget the day in my life.

Yours truly,
Li Hua