Переделать в страдательный залог 1) my friends won a competition last year 2)"ford" corporation produces nice cars 3) people listened to his songs everywhere 4) my mother adores soap operas 5) my dog kept our house for some time

The competition was won by my friends.
Nice cars are produced by "Ford" corporation.
His songs are listened to everywhere.
Soap operas are adored by my mother.
Our house was kept by my dog for some time.