补全对话。 根据对话内容，填入适当的话语，使对话完整。
A: Good morning, Granny. _________________________?
B: Oh, boy. It’s difficult for me to breathe.
A: _______________________________?
B: I have been like this since last week.
A: ____________________________?
B: No. I haven’t seen the doctor. The chemical factory produces terrible gas.
It makes my chest hurt.
A: ___________________________. Pollution causes too many problems.
I think I should write to the newspaper about these problems.
B: ___________________.
A: You’re welcome.