Problem: Continue the following story.

Kayla had flown all around the world whereas Tanya sailed everywhere. 
Here's how I want to continue it: Kayla loved air travel.

Problem: Continue the following story.

Rebecca decided to join the Armed Forces, but Rachel had to stay behind to attend school, because 
Here's how I want to continue it: Rachel was a minor.

Problem: Continue the following story.

Mary had used a tote bag more than a backpack even though the 
Here's how I want to continue it:
backpack is roomier.