I'm sorry about the thing last time.But actually ,I don't need help.I'm just think about how to write .I don't want you thank i am a arrogant student,so I wrote this to you.
I am sorry for my impolite behaviour and the reason why is becasue I have been asked the same question for three times so that I am very upset. Then I really don't need your any help, but my English is not good, so I don't know how to reject your kindness. I am very afraid that you will ask the same question and then I don't know how to reply it, so I did it. My English expression is not good and please don't misunderstand my meaning. Thanks for your understanding.