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
YOUR SINCERELY
Mrs. Jennifer