Problem: How does the sentence end?

Rebecca asked Natalie what time their beginner's yoga class started but 
OPTIONS:
- Rebecca could not remember.
- Natalie could not remember.
Answer: Natalie could not remember.

Problem: How does the sentence end?

Isn't it wiser to buy a reusable filter than a disposable filter? I think the 
OPTIONS:
- reusable filter is expensive in the long run.
- disposable filter is expensive in the long run.
Answer: disposable filter is expensive in the long run.

Problem: How does the sentence end?

I really enjoyed the mangos that I got from the store more than the pears, because the 
OPTIONS:
- mangos were sweeter.
- pears were sweeter.
Answer: mangos were sweeter.

Problem: How does the sentence end?

I decided to order takeout from the Indian restaurant even though the Chinese restaurant is cheaper. The 
OPTIONS:
- Indian restaurant has the worst food.
- Chinese restaurant has the worst food.
Answer:
Chinese restaurant has the worst food.