Dear Mr. Smith,
1. I'm writing to complain about the dirt and smoke come from your factory's chimneys.
2. Two days ago I decided to do my washing.
3. I washed the sheets and put them out to dry because it was a nice sunny day, there was a breeze.
4. When I took washing in, I was horrified to discover that it was covered in dirty marks.
5. I assume that the breeze I mentioned carried the dirt from your chimneys.
6. Until this accident, I thought your chimneys were safe and clean.
7. I suggest that your factory should fit the new filters to its chimneys as the dirt and smoke are dangerous.
8. I look forward to receiving your reply.
Yours sincerely,
Mrs. Jennifer Hunter