[Q]: How does the sentence end?

Since Randy was quite good at pool and Donald was a beginner,

[A]: Donald knew how to do zero trick shots.

[Q]: How does the sentence end?

The school insisted on a dress code for the student body, because the

[A]: student body was unkempt.

[Q]: How does the sentence end?

Jeffrey demanded that Ryan pay him what he was owed for his labor, because

[A]:
Jeffrey finished the work.