Change these active sentences into the passive so that they sound more natural. 1. somebody opened the channel tunnel in 1994. exm - the channel tunnel was opened in 1994. 2 they have chosen the new design. 3 thousands of people see this website every day. 4 the employers asked the staff for their opinions. 5 a mechanic is repairing my car at the moment. 6 somebody has found the missing file. 7 somebody made this watch in switzerland.