[Q]: How does the sentence end?

William wiped all of the saliva off of Nelson's chin, because

[A]: Nelson was an invalid.

[Q]: How does the sentence end?

At the beach Kyle has to suck in their stomach to impress the girls but not Hunter as

[A]: Hunter is fit.

[Q]: How does the sentence end?

Nick bought a ring from Jeffrey in the pawn shop, and

[A]:
Nick was the customer in the store.