Problem: Continue the following story.

Sarah wins employee of the month more often than Laura because 
OPTIONS:
- Sarah puts in shorter work hours.
- Laura puts in shorter work hours.
Here's how I want to continue it: Laura puts in shorter work hours.

Problem: Continue the following story.

John could not finish watching the movie within the time his mom gave him because the 
OPTIONS:
- movie is long.
- time is long.
Here's how I want to continue it: movie is long.

Problem: Continue the following story.

When the functions were calculated, it took longer than the equations, so the 
OPTIONS:
- functions were complicated.
- equations were complicated.
Here's how I want to continue it:
functions were complicated.