Problem: How does the sentence end?

Nick asked Christopher how to focus a camera, since 
Answer: Nick had never been able to get the hang of that.

Problem: How does the sentence end?

In an effort to eat healthy, Craig attempted to get Adam on board, but 
Answer: Adam got rid of the cactus juice in the house and replaced it with unhealthy stuff.

Problem: How does the sentence end?

The behavior of Jason was horrible and evil compared to Ian, due to 
Answer: Ian being disciplined.

Problem: How does the sentence end?

The story ran in both the paper and on the television, but the 
Answer:
television coverage allowed me to listen to the details.