[Q]: How does the sentence end?

Michael smelled much better than Christopher did although

[A]: Christopher had just taken a long shower.

[Q]: How does the sentence end?

William had to add baking soda to their pool so they asked Aaron for help because

[A]: William had never cleaned their pool before.

[Q]: How does the sentence end?

The check for the bill that Kyle wrote to Jason bounced, so

[A]:
Jason had to receive cash for the bill.