Поставьте следующие предложения в страдательный залог.
1. They will build a stadium here in the near future. 2. The earthquake ruined several big cities. 3. Storms and floods have done a lot of damage. 4. The fire has done a lot of damage. 5. The flood has seriously damaged the city library. 6. Industrial pollution is ruining our city! 7. We must do something before it’s too late.