Problem: How does the sentence end?

Katrina stayed behind Carrie when they were climbing the hill because
Answer: Carrie was much quicker.

Problem: How does the sentence end?

Katia prefers posting her personal messages on Twitter to Facebook because the
Answer: Twitter is much more private.

Problem: How does the sentence end?

Laura gave Jessica an Aquarium for their home, and
Answer: Jessica enjoyed the fish in their tank.

Problem: How does the sentence end?

James could not finish reading the book on his trip to the beach. The
Answer:
trip is short.