Have you met/did you meet the new teacher yet? when did you learn/have you learnt to ski? he has taken/have taken lots of photographs today. we have not had/did not have an exam last week. when you went on the school trip, have you visited/did you visit the museum? i never did/have never done a chemistry experiment before.

Have you met the new teacher yet?
When did you learn to ski?
He has taken lots of photographs today.
We didn't have an exam last week.
When you went on the school trip, did you visit the museum?
I have never done a chemistry experiment before.