Problem: How does the sentence end?

After their parents fell ill, Natalie gave them care while Victoria did not. 
Answer: Natalie was very careful.

Problem: How does the sentence end?

The infestation of mites in the attic did not spread to the basement, since the 
Answer: basement was so resistant to infestations.

Problem: How does the sentence end?

The man played the game for longer than he spent watching the movie because the 
Answer: movie was shorter.

Problem: How does the sentence end?

Aaron has to stay up all night while Jason gets to rest because 
Answer:
Aaron has a paper due in the morning.