Презентация на различик past simple и present perfect

Last summer we visited / have visited all the interesting places in the region.
There are foot prints everywhere! Someone came / has come here!
It is an interesting book, I have read / read it.
When did you go / have you gone to France?
I never watched / have never watched this film.
They watched / have watched an interesting movie a week ago.
Yesterday I have/had have dinner with a friend.
She has already visited/already visited her grandmother last month.

Mary (finish) school 10 years ago.
He (write) a letter and now he is going to send it.
Last weekend they (go) to the sea. 
I already (decide) where to go this weekend.
John (leave) his bag in the library last Monday.
Harry and Jane (take) new TV set and now are enjoying a film.
Clara (be) never abroad.  

Mary finished school 10 years ago.
He has written a letter and now he is going to send it.
Last weekend they went to the sea. 
I have already decided where to go this weekend.
John left his bag in the library last Monday.
Harry and Jane have taken new TV set and now are enjoying a film.
Clara have never been abroad.