Complete the dialogue with proper words or sentences.
A: Good moming, 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.