Problem: How does the sentence end?

We reduced the number of mice in the facility and not the hole since the 
Answer: hole was meant to be kept dirty.

Problem: How does the sentence end?

In making caramel sauce, Mary did a great job, while Maria did not because 
Answer: Mary had a good recipe.

Problem: How does the sentence end?

Bill purchased all new dishes for his house to work with his new dishwasher, but the 
Answer: dish were too large.

Problem: How does the sentence end?

Sarah has able to ride a bike without training wheels, unlike Katrina, because 
Answer:
Katrina was younger and had poor balance.