[Q]: How does the sentence end?

Sarah had painful hemorrhoids but Megan does not. 

[A]: Megan had to have an operation on their heart.


[Q]: How does the sentence end?

The container was filled with water and milk, but the container burst and the 

[A]: milk was the heavier liquid.


[Q]: How does the sentence end?

Tanya earned extra money for college by tutoring Carrie, because 

[A]:
Carrie was a poor student.