[Q]: How does the sentence end?

The desk was promptly taken out of the gross room because the 

[A]: desk was fragile.


[Q]: How does the sentence end?

Logan did better in the cooking class than Ian did because 

[A]: Ian had less culinary knowledge and skill.


[Q]: How does the sentence end?

Christine wasn't paying attention in class unlike Cynthia, so 

[A]:
Cynthia passed the math exam later that day.