[题目要求]王军的外婆上星期从楼上摔下来，跌断了右腿，现在卧床。王军的母亲李一花为此向刘老师请假，说明家中的情况，王军的父亲现在北京开会，需要王军在家照顾外婆，大约3天。请根据上述提示用英文写一张请假条，约80-100词，不要根据中文翻译写作文。

　　Dear Mr. Liu,

　　I’m Li Jun’s mother. I’m writing to ask for permission for Li Jun’s absence. The fact is that he has to stay at home to take care of my mother who had a serious fall from upstairs and got her right leg broken last week. I’m sure he will be back in three days when my husband returns from a meeting in Beijing.

　　Thank you.

　　Sincerely,

　　Li Yihua