sentence: The student's new computer would not fit in the cabinet because the OPTIONS:
- cabinet was too big.
- computer was too big.
complete: computer was too big.

sentence: It is easy for Joel to stay motivated but Joseph needs a lot of encouragement, I think OPTIONS:
- Joel is a self starter.
- Joseph is a self starter.
complete: Joel is a self starter.

sentence: She was writing her paper with ink, but needed to get more ink since the OPTIONS:
- paper was long.
- ink was long.
complete:
paper was long.