Problem: How does the sentence end?

Rachel asked Elena if she had heard any news about the lawsuit because 
Answer: Rachel had not heard anything.

Problem: How does the sentence end?

Temptation was difficult for Sarah to avoid but not Erin. 
Answer: Sarah was had a weak will.

Problem: How does the sentence end?

John hated mold and preferred tortillas to store bought bread because the 
Answer: tortillas stayed fresh longer.

Problem: How does the sentence end?

Although Joseph was a better English teacher than Hunter 
Answer:
Joseph always questioned when to use a comma.