Although Betty was a angrier person overall than Amy, 
OPTIONS:
- Betty let her negative thoughts get away from her.
- Amy let her negative thoughts get away from her.
Amy let her negative thoughts get away from her.

Justin won many more races than Jason was able to win because 
OPTIONS:
- Justin had longer legs.
- Jason had longer legs.
Justin had longer legs.

Jennifer had a great score on the SAT whereas Monica had a low score, so the chance to get into a good school for 
OPTIONS:
- Jennifer was high.
- Monica was high.
Jennifer was high.