Problem: Continue the following story.

She replaced all of the old kitchen knives with new knives, because the 
Here's how I want to continue it: old kitchen knives were blunt.

Problem: Continue the following story.

Justin needed to trap Jeffrey, because 
Here's how I want to continue it: Justin was looking to protect the neighborhood from vandalism.

Problem: Continue the following story.

Going jogging is something Mike hates, but he doesn't mind rowing. The 
Here's how I want to continue it:
jogging makes him feel crappy.