用英语给老板写一个道歉信

用英语给老板写一个道歉信
You are supposed to be a very important presentation today .However,you miss it for some reason. write a formal letter of apology in 120 words to you boss. you should cover the following points:
1、表示道歉
2、解释原因
3、保证以后不会发生类似的事情

哈哈哈哈我常常就因为懒而逃课.
这种道歉信常常写.
以下的我就是写因为过敏了所以来不及.
Dear (老板名字),
I understand that I had to do an important presentation,however I missed such an important event.I am terribly sorry about my absence!
The truth is I am actually allergic to cinnamon(肉桂).However because I never had any food with cinnamon in it before so I never knew.
Yesterday my sister brought home some desserts and the slice of cake that I had actually contains cinnamon!
Although I took some allergic pills as soon as possible,the rashes did not go away immediately.Since the way I looked was terrifying,I had no choice but to stay at home and rest for good.
Once again,I am terribly sorry about my absence!Please allow me to redo my presentation for I understand how important the presentation is.
Sincerely,
(你的名字)