sentence: The payments that I put toward my bills weren't enough, because the OPTIONS:
- bills were too expensive.
- payments were too expensive.
complete: bills were too expensive.

sentence: The serum was given to Neil from Dennis, so OPTIONS:
- Neil must be the doctor at the hospital.
- Dennis must be the doctor at the hospital.
complete: Dennis must be the doctor at the hospital.

sentence: Betty always wasted money while Rebecca maintained a budget, so OPTIONS:
- Betty always bought needless things.
- Rebecca always bought needless things.
complete:
Betty always bought needless things.