Problem: Continue the following story.

Donald's car started, but Nelson's car did not, because 
Here's how I want to continue it: Donald put his spark plugs in correctly.

Problem: Continue the following story.

Jeffrey always put peanut butter and jam on his sandwiches unlike Donald because 
Here's how I want to continue it: Jeffrey loved the combo.

Problem: Continue the following story.

Carrie needed to be vigilant about her bone health which Natalie worries about since 
Here's how I want to continue it:
Natalie is concerned.