Ba:Hello An!
An: Hello Ba!
Ba : How are you?
An : I'm not good now because the environment is very polluted.
Ba : Mee too.
An: So we must have an itention to protect the environment.
Ba : I agree with you.
An : Let's go to the protest people do not throw litter , set up environmental protection group.
Ba : Ok!
An : Let's get on with work.
Ba : Let's go
