sprawdzenie listu nieformalnego

Proszę o sprawdzenie :) i nie wiem czy mieszczę się w ilości słów odpowiednich do formy listu? z góry dziękuję :)

Dear Katie,
I'm sorry I haven't written for so long but I have had a lot of learning since begining the school year.
I must hard working because my new teachers at secondary school are very demanding.
Recently had happened a lot of interesting things.
Do you know that I had joined to the school team of handball. I train twice a week - I love it!
Recently I got to like science fiction films too. I had met a very handsome boy from the upper class,
which often tells me about novelties at the cinemas.
Because I hope that you will go to the cinema with me on next Friday. On that day it'll a premiere of the new
science fiction film "2012". A topic of this film is the end of the world which is supposed to take place
in three years. Of course I don't believe it but probably it contains excellent special effects and holdng
in stretching from the first moment.
So, I look forward to hearing from you soon. Give my regards to your family.
Love and kisses,

Anka

I must 'hard working' (kurcze, nawet nie rozpoznajesz czesci zdania, i dlaczego tlumaczysz slowo w slowo z polskiego,...WORK HARD because my new teachers at secondary school are very demanding.
'Do' DID you know that I had joined to the school team of handball. I train
twice a week - I love it!
I had met a very handsome boy from the upper class, 'which' I TY o ludzich piszesz 'which' - popraw!) often tells me about novelties at the cinemas.
'Because' (nie rozumiem dlaczego zaczynasz zdania z 'because' - z czym to sie laczy?)
On that day 'it'll' THERE WILL BE a premiere of the new science fiction film "2012".
...it contains excellent special effects and 'holdng in stretching' (tego nie rozumiem) from the VERY first moment.

Dear Katie,
I'm sorry I haven't written for so long but I have had a lot of learning since begining the school year.
I must HEAVILY STUDY (może być?) because my new teachers at secondary school are very demanding.
Recently had happened a lot of interesting things.
DID you know that I had joined to the school team of handball? I train twice a week - I love it!
Recently I got to like science fiction films too. I had met a very handsome boy from the upper class,
WHO (niewybaczalna pomyłka;/) often tells me about novelties at the cinemas.
BY THE WAY (nie pomyślałam pisząc 'beacuse') I hope that you will go to the cinema with me on next Friday. On that day THERE WILL BE a premiere of the new
science fiction film "2012". A topic of this film is the end of the world which is supposed to take place
in three years. Of course I don't believe it but probably it contains excellent special effects and is very gripping.
So, I look forward to hearing from you soon. Give my regards to your family.
Love and kisses,
Anka


'holding in stretching' -miałam na myśli 'trzymający w napięciu', miałam to na lekcji ale skoro niezrozumiałe to chyba lepiej będzie użyć 'gripping'

teraz jest dobrze??