sentence: We used the machine to do the laundry rather than the washboard because the OPTIONS:
- machine was harder to use.
- washboard was harder to use.
complete: washboard was harder to use.

sentence: Amy was very jealous of Emily's engagement so OPTIONS:
- Amy tried to ruin the engagement party.
- Emily tried to ruin the engagement party.
complete: Amy tried to ruin the engagement party.

sentence: The surgery on the heart was more expensive than the one on the ear because the one on the OPTIONS:
- heart was more simple.
- ear was more simple.
complete:
ear was more simple.