What is the proudest achievement in your life?

For a student,a good mark mostly means how he worked hard.Yesterday,my semester test's grade came out,I got the first place of my class.I was very glad.But I knew the proudest moment for me was exchanged from my hard working.From then on,I really know that a hard working means a good harvest.
对于一个学生来说,一个好的分数绝大多数意味着他的努力程度.昨天,我的期末考试成绩结果出来了.我得了班级第一.我非常高兴.但是我知道,这个骄傲的时刻是我的辛勤努力换来的.从那刻起,我真正懂得了一份耕耘一份收获.

at 啊,因为这是在短时间内.

[我是英文老师,请放心使用]
1.My produest thing in my life is to make a dinner for my parents.Since I never cooked for my parents and I am not good at cooking,but I always want to do something good to them,so I made up my mind and cooked a dinner for them.
2.I expected to get about 80 points in my English exam,but finally I got 100 points.I stuided this exam for whole week without playing anything else and it's how I exceeded my expectation.

I feel that I need to improve my English writing level.Although I pronounce well,but there are grammatical mistakes in my writing.My proudest moment of using English is when I speak English whereas the most embarrassing mistake that I had ever made using English was "get down of the car".It was supposed to be "get out of the car".