Present perfect vs past simple

1. I was in London two years ago.                                                         2. I have been to London two years ago.

1. Have you been to school yesterday?                                          2. Were you at school yesterday?

1. Has Jim ever written a book? 2. Did Jim ever write a book?

1. Did you ever eat octopus?       2. Have you ever eaten octopus?

1. Harry left home at 10.00.        2. Harry has left home at 10.00.

1. Where did you go on holidays last summer?                                    2. Where have you gone on holiday last summer?

1. I visited my Grandparents at Christmas.                                           2. I've visited my Grandparents at Christmas.

1. Oh gosh! My dog ate my sandwich!                                            2. Oh gosh! My dog's eaten my sandwich!

1. We never saw this film.            2. We have never seen this film. 

1. Did you eat spaghetti in the evening?                                               2. Have you eaten spaghetti in the evening?

1.Have you seen my wallet? I've lost it.                                                            2. Did you see my wallet? I've lost it.

1. Oh no! I lost my keys!.               2. Oh no! I've lost my keys.