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по примеру
use the present perfect form (affirmative, negative or interrogative) of the verbs in brackets.
ex: it rain) for a long time.
it hasn't rained for a long time.
(be) to poland?
you ever ) chinese food?
i think i (meet) him once before.
she (not / make) dinner yet.
my friends see) this film yet.
we ) to russia.
my best friend and i (know) each other for over fifteen years.
joan (study) two foreign languages.
my friends (not read) this book yet.
i (see) that movie twenty times.
Have you been
Have you ever eaten
I have met
Haven't seen
have been
have known
has studied
haven't read
have seen