How long, for/since B1-B2 adult oriented conversation cards
Where do you work or study? How long / you/ work or study there?
Where do you work or study? How long have you worked or studied there? / How long have you been working or studying there?
Are you on Instagram or another social network? How long / you / be there?
Are you on Instagram or another social network? How long have you been there?
Do you go to a gym? How long /you / be a member?
Do you go to a gym? How long have you been a member?