Problem: Continue the following story.

Justin asked Christopher if they knew a good hair dye, because 
Here's how I want to continue it: Christopher frequently dyed their hair.

Problem: Continue the following story.

Patricia went to the bird cage in the zoo before Monica did because 
Here's how I want to continue it: Patricia owned several birds themselves.

Problem: Continue the following story.

Since the walls were thin, Donald could hear Joel's squeaky bed frame so 
Here's how I want to continue it:
Joel yelled to him he was sorry.