Uzupełnij zdania czasownikiem w odpowiedniej formie past perfect lub present perfect.

I..................(not/be) to the coast for years.
We saw that the glacier........................(get/smaller) compared to ten years ago.
The article.........................(already/appear) on several websites this year.
They................(not/discover) any new caves so far this years.
After I bought the magazine, I realised that I........................(already/read) it.