If Bauerstein's the murderer, nothing could be simpler than for him to substitute some ordinary coco for his sample, and send that to be tested. 
Bauerstein could fake his innocence by using some hot chocolate for the test.
He is suspected of committing fraud.
The pets are sitting on a couch.
Nothing occurred.
Prevention of marine incidents for U.S. economic reasons.
A cat sits on the floor.
The judge was not concerned with us at all.
None of the agencies uses the Internet to communicate with the public.