Order the sentences to make a complete conversation

a. That's good. Do you know anything about pollution?
b. Yes, you're right
c. Why don't we recycle it? We can save a lot of it and we don't pollute
the environment.
d. I see. So now we keep the paper in our bag.
e. Look! There is a lot of waste paper on the floor.
f. What should we do to prevent the pollution now?
g. We shouldn't cut many trees or burn too much coal or gas. We
should recycle things, save power and water.
h. Yes, I do. Pollution is very harmful to our Earth.
i. Let's pick it up and put it into the trash can.

My answer is e - i - c - a - h - f - g - d - b.
But the answer of the exercise is e - d - a - h - f - c - b - g - i .
According to that, I cannot be right because it's an exercise on the test of a province in my country.
I read it carefully. But I still don't know why f -> c->g. Can you explain this to me?
Thank you in advance.