Как правильно писать? his sister (didn't finish/hasn't finished) school yet i (haven't seen/didn't see) tom today (have you met/did you meet) before? yes, we(have met/met) once. it (was/ has been) in spain

His sister hasn't finished school yet
I haven't seen...
Have you met before?
Yes,we have met once. It was in Spain

1-hasnt finished 2-havnt see 3-did you been 4-have met и has been