Problem: Continue the following story.

Betty wants to prepare the ground for sod so she asks Tanya for an advice, because 
OPTIONS:
- Betty doesn't know how to do it.
- Tanya doesn't know how to do it.
Here's how I want to continue it: Betty doesn't know how to do it.

Problem: Continue the following story.

Neil really wanted to go to sleep but Christopher did not because 
OPTIONS:
- Neil was feeling very lively.
- Christopher was feeling very lively.
Here's how I want to continue it: Christopher was feeling very lively.

Problem: Continue the following story.

Justin is less social than Eric, and as a result 
OPTIONS:
- Justin has more friends to turn to.
- Eric has more friends to turn to.
Here's how I want to continue it:
Eric has more friends to turn to.