Problem: How does the sentence end?

Adam chose to purchase a wig instead of receiving a haircut because the 
OPTIONS:
- wig was too expensive.
- haircut was too expensive.
Answer: haircut was too expensive.

Problem: How does the sentence end?

The college that he went to was worse than my university because the 
OPTIONS:
- college had less money for things.
- university had less money for things.
Answer: college had less money for things.

Problem: How does the sentence end?

Because Laura had a lower paying job than Amy, 
OPTIONS:
- Laura was only able to buy a smaller boat.
- Amy was only able to buy a smaller boat.
Answer: Laura was only able to buy a smaller boat.

Problem: How does the sentence end?

The math test made Mike tired, while he did not really mind the history exam. The 
OPTIONS:
- math test was much shorter in length.
- history exam was much shorter in length.
Answer:
history exam was much shorter in length.