1. Mr Jones was very sad and said all that rubbish was killing fish and other sea creatures.
2. Nick said they could clean the beach together.
3. Mary told them that she would ask their friends and neighbors to come and help them.
4. Mr Jones told his children that he was so happy to hear this.
5. Tony said the disposal of untreated sewage in rivers and oceans led to water pollution.
6. Mary said loud and annoying sounded from innumerable vehicles in the highway nearby caused noise pollution.
7. Mai said the rising sea level was product of global warming, a natural phenomenon. The only unnatural thing about global warming was the accelerated rate at which it was happening.
8. Linda said environmental pollution was an impact of human activities on the environment.
9. She'd live in London if she knew anyone here.
10. I'd live in the country if I could find a job there.
11. If I had a spare ticket, I could take you to the concert.
12. If the schoolchildren hadn't forgotten to water any seeds that they sowed, they would have grown.