Трансформируйте предложения в косвенную речь. 1). he said, “it has been proved that ultraviolet light may cause skin cancer”. 2). he said, “scientists are searching for alternative sources of energy”. 3). he said, “many people living in big cities will have problems with breathing because of exhaust fumes”.

1) He said it had been proved that ultraviolet light might cause skin cancer.
2) He said scientists were searching for alternative sources of energy.
3) He said many people living in big cities would have problems with breathing because of exhaust fumes.