Problem: How does the sentence end?

Rachel gobbled down the pancakes that Natalie had prepared in the kitchen because 
Answer: Rachel was so hungry.

Problem: How does the sentence end?

Jason was more comfortable talking in front of a live audience instead of Neil because 
Answer: Neil is cowardly.

Problem: How does the sentence end?

Joseph prepared Jeffrey for worst case scenarios at work even though 
Answer: Jeffrey knows how to respond in an emergency situation.

Problem: How does the sentence end?

Rachel ignored the cockatiel soon after getting it which left Erin to care for it because 
Answer:
Erin is responsible.