阅读下面短文，根据以下提示：1）汉语提示，2）首字母提示，3）语境提示，在每个空格内填入一个适当的英语单词，并将该词完整的写在答题卷上。所填单词要求意义准确，拼写正确。

Dear Miguel,

    I’m writing this letter to you because I really want you to hear how strongly I believe you have the ability to go far in life, and ____________ I believe staying in school will help you get there.

    I was _________(失望) to hear that you wanted to leave school. You and I both know that, when you put your mind __________ it, school work is pretty easy for you.  ___________, for some reason, you often decide you just don’t want to do it. G_____________ from high school is going to open a lot of d___________ for you in life – for work and for f____________ schooling or training. I hope you make a _____________ (决定) to finish this school year strong and approach next year with a positive attitude.

    You are very smart. It would be sad–both for you and for o_______ in your life, like your parents and me – if you ___________ (选择) not to use all the “smarts” that you do have.

Sincerely,

Mr. Ferlazzo

实地测定界址点坐标的方法有极坐标法、直角坐标法交会法和（）。