Problem: How does the sentence end?

The witch tried to write the spell down in the book but the 
Answer: book was too small.

Problem: How does the sentence end?

It was easier to reach high places with the stool instead of the chair, because the 
Answer: stool was tall.

Problem: How does the sentence end?

William had to add baking soda to their pool so they asked Aaron for help because 
Answer: Aaron had definitely cleaned their pool before.

Problem: How does the sentence end?

The money couldn't be used as currency at the store because the 
Answer:
money wasn't local.