>I enroled at a a two-week-long intermediate course. --->
>dwutygodniowy to two-week-long?
two-week
>I left a message on an anserwing machine. OK
>
>I have made some plans for my holiday trip to London. OK
>
>I have not received any reply with a confitmation of a reservation
>yet.
of the/my reservation - przeciez nie chodzi ci o wszystko jedno jaka rezerwacje
>I really ask you for a confirmation to my participation.
I ask you to confirm my participation
'really' jest niepotrzebne. A co ma znaczyc participation? Jak mozna potwierdzic participation przed rozpoczeciem tego czegos?