Problem: How does the sentence end?

The teenager took some medicine to help with her period but the
Answer: period was too strong.

Problem: How does the sentence end?

The large puzzle bob purchased would not fit on his table, the
Answer: table was too small.

Problem: How does the sentence end?

The serum was given to Neil from Dennis, so
Answer: Neil must be the patient at the hospital.

Problem: How does the sentence end?

Brian was in charge of planning a cruise, when Joseph decided to not go.
Answer:
Joseph was relieved he understood.