1. I have never met such a clever children.
2. Who teach you to play football?
3. Look! Little Jack dances.
4. I never don't eat chocolate.
5. He has come an hour ago.
6. When have you met him?
7. It's a better salad you have ever made.
8. The bread is on the table, isn't there?
9. Tom has been to Vladimir, isn't he?
10. He enjoy listening to classical music.