Jessica was a much more diligent worker than Rebecca so 
OPTIONS:
- Jessica was resigned to her termination.
- Rebecca was resigned to her termination.
Rebecca was resigned to her termination.

Cynthia did not do well in school while Monica did because 
OPTIONS:
- Cynthia studied hard and respected her teachers.
- Monica studied hard and respected her teachers.
Monica studied hard and respected her teachers.

The activity wore out Dennis while Joel was hyper afterwards. 
OPTIONS:
- Dennis lacks energy and strength.
- Joel lacks energy and strength.
Dennis lacks energy and strength.