Thank you for your letter. It was very interesting. I'm gonna do my best to answer all your questions.
These are the open - air markets, that's why they've got this name. As for me, I dislike these markets because there are lots of people and little space there. You know, a lot of different goods are sold at these markets. Some products (you can often see fruit and vegetables) , some clothes, shoes, souvenirs, hygiene items and even some animals.
Well, I hope I could answer all your questions.
Sorry, but I've to do my homework now.
I'll look forward to getting your letter.
Best wishes!
Liza.