急求英语作文,1个半小时后就撤问题啦

Dear Jack:
How are you? grade 12 (equivalent to gao san) is an exciting yet busy year. it's my last year at high school and i'm trying to enjoy it as much as i can but also keeping my grade up at the same time. my friends and i would hang out on the weekend for a little bit but most of the time we'd spend in the library studying. you could say there are a not a lot going on with my life right now but also a lot going on. i can feel that i'm closer to my all my friends now because we know we need to cherish every moment we spend together before our graduation. once we go time's not coming back.
I am still taking english and i think it's going pretty well although i'd still have a bit of problems with grammar and sentence structure, but i think i can get this problem fixed before the final exam comes, hopefully.
Right now i at a life turning point and not only leaving my friend dpressed me but i am also overwhelmed and stressed out by the workload we get in the senior year. Life pass by so fast when i look back i feel i didn't want to graduate yet. Since you are graduating too, does graduation intimidates you? i can't even think about it.