Here are some i think are hard but fun....

9. Stand Take 2 Takings I U Throw My

10. H ijklmn O

11. T M
A U
H S
W T

12. RASINGINGIN

13. DOX
DOX

14. What goes up and down, but doesn't move?

and my favorite

15. What is the beginning of eternity, the end of time and space; the beginning of every end and the end of every place?

Good Luck