Problem: How does the sentence end?

I had a more difficult time at the Police Academy than at school because the 
Answer: school was easier.

Problem: How does the sentence end?

Steven is given a warning by the trooper, but Kenneth gets a ticket, so 
Answer: Steven was likely more polite.

Problem: How does the sentence end?

Ken tried to draw a design onto his stencil paper while using a pencil, but the paper ripped because the 
Answer: paper was too thin.

Problem: How does the sentence end?

John tried to go seed hunting using a bow and arrow, but missed every shot because the 
Answer:
arrow wasn't straight.