Problem: Continue the following story.

My purse was lighter than my backpack because I had a lot of things in the 
Here's how I want to continue it: backpack .

Problem: Continue the following story.

As William never shows satisfaction in whatever Matthew does, no matter how great the achievement, 
Here's how I want to continue it: William is unreasonable.

Problem: Continue the following story.

The researchers did a study on Natalie but excluded Christine because 
Here's how I want to continue it:
Christine was an unqualified subject.