Преобразуйте следующие предложения, заменив действительный залог на страдательный.
1. The greenhouse effect has reduced wheat yields in America.
2. The rising sea level will flood London.
3. Nuclear power stations produce electricity.
4. Poorer nations do not save energy.
5. Developed nations have damaged the environment.
6. Factories were polluting the atmosphere in the 1960s.
7. Many countries produced too much waste in the ’80s.
8. Some countries had made laws against river pollution before 1980.
1) Wheat yields have been reduced in America by the greenhouse effect
2) London will be flooded by the rising sea level
3) Electricity is produced by nuclear power stations
4) energy isn't saved by poorer nations
5) the environment has been damaged by developed nations
6) the atmosphere was being polluted by factories in the 1960s
7) Too much waste were produced in the '80s by many counties
8) Laws against river pollution had been made before 1980 by some countries