[Q]: How does the sentence end?

Amy asked Christine to take care of her children for the day, because 

[A]: Amy was busy with work.


[Q]: How does the sentence end?

Matthew honored their father's passing and Brian did not because 

[A]: Brian had a bad father..


[Q]: How does the sentence end?

In Japan, a superhighway was scheduled to be built over the span of ten years, but the budget ran out. The 

[A]:
superhighway was never realized.