[Q]: How does the sentence end?

Nelson was mad that Robert had their editorial accepted over theirs, but it was because

[A]: Robert had written a better one.

[Q]: How does the sentence end?

Randy found it easier to be healthy than Derrick because

[A]: Derrick did not eat a wide variety of fruits and vegetables.

[Q]: How does the sentence end?

Samuel wants to get better at thriller dance so he asks his tutor Eric for extra hours, because

[A]:
Samuel wants to improve.