Time is flying .There are only 62 days to go .when I review the past time which I didn't made useful ,I find that I have wasted too much time doing so many useless things . When I just entered the high school ,I have many nice desires.One of then was that I wanted to meet a classmate who I have not seen for nearly 3 years and I wanted to be a studen as good as her .But now when I remember those desires,I feel regret and even a little ridiculous .Life is full of unexpected things and we couldn't know what will happen in the next moment .Things doesn't go with the way you want . We just can do our best .Trying our best to do what should we to do ,what is worth doing .That is the most important thing whic is worthy of being done all our life .