First of all I would like to apologise that I haven't written to you for such a long time.
APOLOGIZE FOR NOT DOING STH
I HAVE an exam at the end of the month - to nie jest wynik twojej decyzji, termin egzaminu zostal ci narzucony z gory.
How we'll travel along Cornwall, and where we will have to sleep?
INWERSJA W PYTANIACH!!!
I suggest to spend nights in youth hostels.
BEZOKOLICZNIKA NIE MOZE TU BYC. I suggest that..., ale lepiej 'I think it would be a good idea to...
on open sky
NA NIEBIE? napisz: in the open
I'm waiting for an answer form you with all the
particulars referring to our sojourn in Cornwall. - TO JEST FORMAL eNGLISH. TU NIE PASUJE
(tu jeszcze chciałbym pozdrowić jego rodziców :D)
Give my best regards to your parents