sentence: We returned the drill and opted to purchase a hammer, since the OPTIONS:
- drill was conducive to our building project.
- hammer was conducive to our building project.
complete: hammer was conducive to our building project.

sentence: After dinner, I used a sponge to clean the kitchen counter because the OPTIONS:
- counter was clean.
- sponge was clean.
complete: sponge was clean.

sentence: Tanya helped Carrie with her math homework because OPTIONS:
- Tanya thought the algebra problems were difficult.
- Carrie thought the algebra problems were difficult.
complete:
Carrie thought the algebra problems were difficult.