[Q]: How does the sentence end?

Because Erin owned a cat while Carrie owned a dog, 

[A]: Erin needed to buy catnip.


[Q]: How does the sentence end?

While making Easter eggs, Kayla ate a bunch of the eggs while Jennifer didn't eat any. 

[A]: Kayla was hungry.


[Q]: How does the sentence end?

Mary gave the remote to Monica because 

[A]:
Monica wanted to change the channel and watch a different tv show.