Problem: How does the sentence end?

Kayla was a carnivore and Rachel was not, therefore
Answer: Rachel never ate a lot of meat.

Problem: How does the sentence end?

The smell really annoyed Michael but had no effect on Justin since
Answer: Justin was not sensitive.

Problem: How does the sentence end?

Nick feels more confident in their outfit than Joseph because
Answer: Nick just lost ten pounds recently.

Problem: How does the sentence end?

Cynthia prefers fruit while Rebecca prefers vegetables, so
Answer:
Rebecca bought some carrots from the store.