First of all, now that I have entered the society, I understand the importance of academic qualifications. If I go back to senior three, I will study hard and get into a good university!
Also, if I return to the third year of high school, I will definitely confess to the girl I secretly loved at that time, so that she can understand my mind!
If I go back to senior three, I will definitely apologize to my math teacher, because I am young and frivolous and hurt my teacher's heart. At that time, I was still cocky. It's silly to think about it now!