[Q]: How does the sentence end?

Mary had to clean their house more often than Sarah did because 

[A]: Mary had a cat in their house.


[Q]: How does the sentence end?

Kyle had a huge flag that William really wanted, so 

[A]: William stole it from him.


[Q]: How does the sentence end?

Steven was a professional athlete unlike Ian so 

[A]:
Steven would always win the games when they played each other.