[Q]: How does the sentence end?

The price of soda was increasing at the store but going down at the market, since the

[A]: store had a shortage.

[Q]: How does the sentence end?

The new speed boat Julie purchased for herself would not fit in her garage, the

[A]: boat was too large.

[Q]: How does the sentence end?

William was a prolific writer and Joel was an avid consumer, so

[A]:
William started a new book after they finished penning the current one.