Dzięki wielkie za pomoc!!
Teraz moja wersja poprawiona (mam nadzieję, ze w miarę dobrze :)
Dear Sir,
I would like to apply for lifeguard assistant I saw advertised in THE students magazine“Remont".
At present I am studying at THE Academy of Physical Education in Warsaw. I receive top grades there and spend many hours AT(?) a swimming-pool. I took courses as an instructor of swimming. Last year I was in Greece and worked there as Lifeguard assistant.
The reason I am applying for Lifeguard assistant is that I haven't got a job for the holiday. I would have to WORK full-time. As all good lifeguards must be, I am brave, muscular and organized. I have knowledge of first aid and the ability to protect people when they are in danger.I believe THAt I have the education, experience and personality that an excellent lifeguard needs.
I am positive that I may make a good candidate for the job you offer and could be very grateful if you would consider my application.
Yours faithfully,
mmm
jeszcze raz wielkie dzięki za pomoc!Pozdrawiam!