sentence: I replaced my old wood garden shed in the backyard with a concrete one. The OPTIONS:
- concrete was too weak.
- wood was too weak.
complete: wood was too weak.

sentence: When the person started choking, Betty but not Katrina performed the Heimlich maneuver because OPTIONS:
- Betty had very little knowledge of first aid.
- Katrina had very little knowledge of first aid.
complete: Katrina had very little knowledge of first aid.

sentence: The shingle would work better on the house's slanted roof than the tar because the OPTIONS:
- shingle are more common.
- tar are more common.
complete:
shingle are more common.