假设你是李华，你的英语老师Mr. Black要求你们周六下午去听一场关于英国历史的讲座，但你因故不能参加。请你根据以下提示，写一封邮件向Mr. Black请假。
内容主要包括：
1．表示歉意；
2．去机场接一位家乡的老朋友；
3．对英国历史很感兴趣，为不能去听而感到遗憾；
4．询问是否有录音，以便补听讲座。
注意：
1．词数100左右；
2．可以适当增加细节，以使行文连贯；
3．邮件开头和结尾已给出，不计人总词数。
Dear Mr. Black.
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
Yours sincerely,
Li Hua