[Q]: How does the sentence end?

To build a successful program, a reliable compiler was employed, as the 

[A]: compiler provided the extra power.


[Q]: How does the sentence end?

Joel loves doing research, but not Jeffrey, so 

[A]: Joel got an A on the research paper.


[Q]: How does the sentence end?

Victoria wanted to make fabric earrings and Natalie did not because 

[A]:
Natalie had no interest in crafting.