Bonjour j'ais realiser cette exercise mais j'ais juste besoin d'étre corriger

1) The bank was built four years ago.
2) Calamity Jane came to deadwood six years ago
3) The mine was opened five years ago.
4) The saloon barman got his job five years ago.
5) A long time ago an Indian woman told calamity Jane that she would find gold.

6) Calamity Jane was born a long time ago.
7) They discovered gold in California weeks ago.
8) The treaty of the fort Laramie was signed a year ago.
9) The first pioneer travelled west 9 years ago.
10) The pony express started a week ago.

11) Calamity Jane came to deadwood two days ago
12) There are two saloons in this town.
13) She came with the general Custer six years ago.
14) The miners found gold four years ago.
15) A long time ago the Indians where the only ones these fields
16) deadeye Joe found a gold nugget a week ago.