sentence: William was able to stay up later than Kevin was although  OPTIONS:
- William had drank their coffee.
- Kevin had drank their coffee.
complete: Kevin had drank their coffee.

sentence: The barber tried to use the chemical to dye the woman's hair but the  OPTIONS:
- hair was too tough.
- chemical was too tough.
complete: hair was too tough.

sentence: Erin was a slow learner while Christine was a quick learner, so  OPTIONS:
- Erin skipped a grade.
- Christine skipped a grade.
complete:
Christine skipped a grade.