Choose the correct tense. 1) i’ve never been/ i didn’t go in hospital before. 2) i have left/left school when i was16. 3) i already visited/have already visited a foreign country. 4) i finished/haven’t finished my university studies yet. 5) i’ve known/i knew my best friend for the last ten years. 6) i’ve never been/i never went on a plane.
2)left
3)have already visited
4)haven't finished
5)have known
6)been