词汇：
apologize to sb. for sth. 因为...向某人道歉
awfully 非常
behavior 行为
excuse 借口
failure 失败
fault 错误
forgive 原谅
ignorant 无知的
inconsiderateness 不顾及他人
inconvenience 不方便
make an apology 道歉
make up for it 弥补
misunderstanding 误解
negligent 疏忽的`
offend 冒犯
overlook 忽略
regret后悔
remedy 补救
remove 消除
shoulder the responsibility 承担责任
thoughtless 欠考虑的
句型：
1) I am awfully/terribly sorry for what I have done.
2) I feel very guilty for what I have done to you.
3) I am afraid what I have done has caused many inconveniences to you.
4) I regret to inform. you that I am unable to do
5) Please accept my most cordial and humblest apologies foronce more.
6) I will try my utmost not to make such a stupid mistake again.
7) I am so sorry to have put you to so much trouble
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