[Q]: How does the sentence end?

I had a more difficult time at the Police Academy than at school because the

[A]: school was easier.

[Q]: How does the sentence end?

Natalie was less prepared for the talent show than Kayla because

[A]: Kayla studied very hard.

[Q]: How does the sentence end?

Jessica could make an arrest against the criminal but not Katrina because

[A]:
Katrina was a civilian.