[Q]: How does the sentence end?

Erin helped Victoria repair the car since

[A]: Erin does such a great job at repairing things.

[Q]: How does the sentence end?

After examining the roots and leaves, I watered the plant because the

[A]: leaves were starting to wilt.

[Q]: How does the sentence end?

I replaced the old cage with a new doghouse for our German Sheppard because the

[A]:
doghouse is new stock.