Problem: How does the sentence end?

Neil has smaller feet than Joel. This is because 
Answer: Joel is the taller of the two.

Problem: How does the sentence end?

We used the tank to store the water instead of the bucket because the 
Answer: tank was cleaner.

Problem: How does the sentence end?

Donald thought Aaron was a poor actor who would never land a role, because 
Answer: Donald was very critical.

Problem: How does the sentence end?

Ian enjoys playing volleyball, but Neil hates it. That's because 
Answer:
Ian 's team always wins.