Use "chew up" in a sentence

1. I should think this gives you enough to chew upon for a bit

2. �How can it possibly grow if you chew up all its leaves?� Emmy told him off, after she had caught him red-handed

3. "Any animal that could sneak into a house could probably manage to chew up the paper and spread the balls and powder around

4. Once the onslaught begins, confusion will reign on their part as we chew up their forward brigades