[Q]: How does the sentence end?

It made sense that Joseph would buy a puppy but that Benjamin would not because 

[A]: Joseph really liked dogs.


[Q]: How does the sentence end?

Christopher stared at the man with tattoos on his face but Dennis didn't. 

[A]: Christopher needed to be reminded it's impolite to stare.


[Q]: How does the sentence end?

Steven is considered to be a Renaissance man, but Donald isn't because 

[A]:
Steven is very refined.