.外籍教师Jack教过你班英语，回美国后，他一直惦记着你，现在你收到了他的电子邮件，在邮件中他询问你目前高三的学习和生活情况以及你高中毕业后的打算。假如你叫李华，请你根据以下内容要点给他回一封电子邮件。
要点：学习生活紧张、有意义（上课、完成大量练习……）；
其它学科好，数学弱（花较多时间学习数学、家人和老师鼓励……）；
理想（上名校、学计算机、做电脑工程师……）。
注意：1. 词数为120左右；
2. 参考词汇：高考—The National College Entrance Examination
3. 邮件的开头和结尾已为你写好（不计入你所写词数）；
Many athletes are clear that the Olympic Games are the only time ________ they will be watched by thousands of millions.
| A．that | B．which |
| C．where | D．when |
The old man often looked back on the past days ________ he worked hard to make a living.
| A．which | B．when |
| C．where | D．that |
Recently I have bought an iPad 3 on the website of taobao. com, ________ the price is very reasonable.
| A．on which | B．in which |
| C．of which | D．from which |
Have you ever seen any trees ________ leaves were black because of the polluted air?
| A．whose | B．that |
| C．which | D．who |
The scientist won the Nobel Prize in Chemistry, ________ made him famous all over the world.
| A．this | B．that |
| C．what | D．which |