檢查有冇文法錯誤(一定有好多)[1]

i have seen your letter, i know you do exercies every day in the gym but you still haven't lose any weight. I'm very pround of you for your hard-working. Last mouth, my friend decided to keep fit just like you, but i saw him/her eating chocolate, sweets and didn't do any exercise after few days.I'm very pround of your insistency.

I have seen your letter, I have known you exercise at gym every day but didn't lose any weight .First, I'm very proud of you can decide to keep fit. Last month, my friend also decided to keep fit but after a few days, I saw my friend is eating chocolate, sweet, and also tell me she didn't do exercise after few days .I'm very proud of you because you are keeping to do exercise every day.

.之後要格一個格