Answer:
I do not think you got anything wrong...Maybe the teachers thought you did?
Explanation:
Try to confront them saying something like...Are you sure I got this wrong, make sure YOU know you got something wrong, before confronting them, if you are sure everything is correct, you may confront.
Answer:
1. Those Books aren't mine
2. Those pens are orange
3. These notebooks are closed
4. Those umbrellas are colorful.
5. Those coats are worn-out
6. Those radios aren't working
Yes.. it depends on the sentence its used in