[Q]: How does the sentence end?

Sarah had painful hemorrhoids but Megan does not. 
OPTIONS:
- Sarah had to have an operation on their heart.
- Megan had to have an operation on their heart.

[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 
OPTIONS:
- milk was the heavier liquid.
- water was the heavier liquid.

[A]: milk was the heavier liquid.


[Q]: How does the sentence end?

Tanya earned extra money for college by tutoring Carrie, because 
OPTIONS:
- Tanya was a poor student.
- Carrie was a poor student.

[A]:
Carrie was a poor student.