-Alice, don’t you think that our town is suffering from air pollution?
-Yes, I do. I think we can start using public transport to solve this problem
-I agree with you. And in my opinion the water is polluted too.
-Well, I’m not really sure. I believe it’s not very polluted.
-Really? Have you watched a TV programme about it? It said that our rivers and lakes are in danger.
-Oh, I haven’t. I’ll watch it tonight. I’m sure that we can do something to protect the fish there.
-Of course we can but it will take a lot of time to clean all lakes and rivers in our town.
-But the fish will be saved. Moreover, we’ll drink clean water. Our local authorities should start thinking about that.