Problem: Continue the following story.

Jim preferred using the weights for exercise instead of the machines because the 
Here's how I want to continue it: weights were not being used.

Problem: Continue the following story.

As the walls began to cave in on Joseph, he thanked Craig who had sold him the house because 
Here's how I want to continue it: Joseph had narrowly escaped due to his advice.

Problem: Continue the following story.

Doing a pushup was very hard for Derrick but not for Michael because 
Here's how I want to continue it:
Michael was in good shape.