Odpowiedź:
1. Barry wondered when people would stop cutting down the rainforest.
2. I asked my boss if I could put a recycling bin in the office.
3. She inquired if these souvenirs were made from real ivory.
4. Experts say climate change is a problem that affects us all.
5. Edward said nobody cared about global warming.
6. He told me that if he had known there was a recycling bin nearby he wouldn't have thrown his newspapers in the rubbish.
7. The scientist said the Earth was more polluted then than it had been in the past. (Aczkolwiek opcja: 'The scientist said the Earth is more polluted now than it was in the past.' też wchodzi w grę, jako,że to stwierdzenie faktu)