[Q]: How does the sentence end?

Nick held Samuel's horse while they conditioned it, because

[A]: Nick was better with the horse.

[Q]: How does the sentence end?

Katrina stayed behind Carrie when they were climbing the hill because

[A]: Katrina was quite slow.

[Q]: How does the sentence end?

Ninja movies are a favorite of Christopher although Jeffrey likes westerns better.

[A]:
Christopher rented Crouching Tiger Hidden Dragon from Blockbuster.