[解析]
Dear Caroline,
I am writing the letter to invite you to an interview held by "Talk and Talk",which is an English programme in our school broadcast station.【高分句型一】(节目介绍)
As you know,our programme starts at 10 a.m.and ends at 11 a.m every Tuesday. 【高分句型二】Besides,the topic is about how to improve our spoken English.You can give us some suggestions about it.It is certain that all students will benefit much from your speech.(访谈的时间和话题)
I would appreciate it if you could take my invitation into account.Looking forward to your early reply.(感谢)
Yours sincerely,
Li Hua