书面表达。

        假如你是芳芳，你的朋友美美今夭过生日，邀请你去参加她的生日晚会。可是你的妈妈病了，弟弟又太小，你必须在家里照看妈妈和弟弟，做家务，晚上还有一节钢琴课。因此，请你给她发一封电子邮件，告诉她你为什么不能去，并祝她生日快乐。  ．

    提示词：be ill，go to the doctor，too young, have to look after, do

housework, have a piano lesson, have a happy party 

Subject: Party    From: Fangfang

Hi, Meimei,

     Thank you for your invitation to come to your birthday party. But I'm

sorry I can't___________________________________________________________________________________________________________________________

                                                                                                    Fangfang