Problem: Continue the following story.

rhododendrons are easy to prune but  roses are not because the 
OPTIONS:
- rhododendrons are very good natured.
- roses are very good natured.
Here's how I want to continue it: rhododendrons are very good natured.

Problem: Continue the following story.

The movers could not get the refrigerator through the doorway to the house because the 
OPTIONS:
- refrigerator was too narrow.
- doorway was too narrow.
Here's how I want to continue it: doorway was too narrow.

Problem: Continue the following story.

Matthew explained to Kyle about how he was going to fly standby in order to save money.  
OPTIONS:
- Matthew was worried.
- Kyle was worried.
Here's how I want to continue it:
Kyle was worried.