Question:
Brett didn't believe Craig that essential oils worked, until

Answer:
Continue the sentence -- Craig proved that they were indeed effective.

Question:
Tim replied to an email from Cynthia and not Mary since

Answer:
Continue the sentence -- Cynthia wrote her email to Tim full of compliments.

Question:
The struggle was more intense for Emily than it was for Kayla, because

Answer:
Continue the sentence -- Kayla was strong by nature.

Question:
Joel tried to gloss over the facts when talking to Robert because

Answer:
Continue the sentence -- Robert was naive when it came to business dealings.