Problem: How does the sentence end?

Gardening potted plants suited Christopher not Joel since 
Answer: Christopher was good at keeping plants alive.

Problem: How does the sentence end?

The college student failed the final test for his math class because the 
Answer: test was too hard.

Problem: How does the sentence end?

Chris was reading a article from the newspaper. The 
Answer: article  in the newspaper was about trains.

Problem: How does the sentence end?

Erin asked Sarah for help with hanging the new bathroom mirror because 
Answer:
Sarah is tall enough to reach.