Problem: How does the sentence end?

Laura enjoyed wearing a dress to work but not Rachel because 
Answer: Rachel was more androgynous.

Problem: How does the sentence end?

Jessica was suspended from school while Maria was praised, because 
Answer: Jessica cheated on a test.

Problem: How does the sentence end?

The finals at school were much tougher for Tanya than Jessica because 
Answer: Jessica had studied more.

Problem: How does the sentence end?

Elena never had leak problems on their period unlike Carrie because 
Answer:
Carrie always used light duty pads.