Oooh... Imam radove!
I just happened to be here now, so, if Bugi doesn't mind, I'll just tell you that you did everything right except one.
Some of these sentences, of course, are quite pointless. Can you ever imagine someone saying "I have bridges", "I have throats"
or "I have (the) mothers"?!
"I used to think the brain was the most fascinating part of the body. Then I realized, well, look what's telling me that."