Polecenie:
I've been sleeping for two hours.
She's been crying.
They've been studying for a long time.
Jane has been playing chess.
I've been working hard.
It's been raining for two days.
They've been running.
My mother has been teaching biology for a year.
You've been collecting stamps for four years.
Jack has been waiting for her for an hour.
Opis gramatyki: czas Present Perfect Continuous lub wszystkie Present Perfect Continuous ćwiczenia
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