In this part, you are allowed to write a letter to the headmaster of your previous high school who has invited you to give a speech to your schoolmates, to explain for your failure to do this. You should 1) make an apologize to the school, because you can't make speech as planned. 2) explain the reason why you want to delay the plan. You should write about 100 words on ANSWER SHEET 2. Do not sign your own name at the end of the letter. Use 'Zhang Wei' instead. Do not write the address. (10 points)