Problem: How does the sentence end?

Physical conditioning came easy to Rebecca but not Victoria because 
Answer: Rebecca spent a lot of time at the gym.

Problem: How does the sentence end?

Betty did not know how to write but Carrie did so 
Answer: Carrie had to help others to fill out the application.

Problem: How does the sentence end?

Jennifer spilled the beans on everyone while Laura remained silent since 
Answer: Laura kept her mouth closed.

Problem: How does the sentence end?

Dennis frequently steals the ball away from Ian in a basketball game because 
Answer:
Dennis is quick.