Across 
1. Contraption.
7. Enjoy slowly.
10. Root meaning throw.
12. Multiply.
13. "Throw in."
14. Like a school, usually.
15. Guest teacher.
17. WOW!
20. Verse.
21. It shows movies.
23. "Across carry."
25. Relationship.
26. Show differences.
27. "Carrier."
28. If you keep going, you keep going...
30. The basis of all the laws of the US.
31. "Out carry."
Down 
2. Green.
3. It stands there.
4. Show off menacingly.
5. Rockin'.
6. Let up.
7. Root meaning stand.
8. Payback.
9. Subject to opinion.
11. "Carry paper."
15. Law
16. Where you should be.
18. "Around stand things."
19. It gets in your way.
20. Huck believed.
21. "Forward throw thing."
22. Factual, unbiased.
24. He carries the story to you.
27. Root meaning carry.
29. "Again throw."