Problem: How does the sentence end?

The brand new mattress didn't fit on the bed frame, because the
Answer: frame was too short.

Problem: How does the sentence end?

Tanya was able to paint a pretty picture but Natalie was not.
Answer: Natalie didn't have her work displayed in an art gallery.

Problem: How does the sentence end?

The credit card of Joseph was frozen, so he calls Adam at the bank because
Answer: Adam is a specialist.

Problem: How does the sentence end?

Brett bought the airplane tickets for Joel and their family after
Answer:
Brett checked their account.