Given the question "According to the text, how many years do the Chinese children have to study at school?" and the answer "Nine years.", write a conversation that might have happened.
M: You know that in China all the children should go to school and must finish the primary and junior school. It's the law.W: Yes, I know this quite well. But still there are some children who can't go to school because of their poverty.M: Yes, it's a matter of money. You see, education here is not completely free for the students. If it were so it would cost the government too much money.W: Do all parents send their children to state schools?M: Yes, nearly all of them. If you are rich, you may prefer to send your children to private schools, but it takes a lot of money.