Problem: Continue the following story.

Amy was grateful to Patricia for giving her some nausea medication, because 
Here's how I want to continue it: Amy felt really sick.

Problem: Continue the following story.

Elena brought the really nice and cool shoes from Rachel because 
Here's how I want to continue it: Elena is the buyer.

Problem: Continue the following story.

The piano that we just bought plays better than the keyboard because the 
Here's how I want to continue it:
keyboard out of tune.