Dear Mr/Ms xxx：
Today I'm e days. So I am very sorry to be absent from school, especially your interesting lessons. I'll be sure to make up for the missed lessons after I recover from the illness.
Yours ever,
xxx.
Dear Mr. Smith，
I am really sorry to tell you that I cannot attend the training course next Tuesday，because ny manager has appointed me to go on a 3-day business trip to Hainan. Will you please record the lecture for me to revie: George Chen, Accounting Department
Date: March 11, 20xx
Subject: Casual Leave of Absence John, I March 23 to 27.
YesterdayI received a letter from my parents, e village, causing serious damageto my house. As the only son of my parents, I should of back to assessthe situation, and help them to get over these difficulties. Though Icannot stay at home for too long a time, I should at least makearrangements for repair e to help. Financially I have nodifficulties.
I : George Chen, Accounting Department
Date: March 11, 20xx
Subject: Casual Leave of Absence
John, I March 23 to 27. Yesterday I received a letter from my parents, e village, causing serious damage to my house. As the only son of my parents, I should of back to assess the situation, and help them to get over these difficulties. Though I cannot stay at home for too long a time, I should at least make arrangements for repair e to help. Financially I have no difficulties. I will call you at 1:30p.m. or you can call me at any time.