Problem: How does the sentence end?

Tanya's homemade bird food was better than Jennifer because 
Answer: Tanya remembered to include sunflower seeds.

Problem: How does the sentence end?

A caulking gun was bought at the store by Cynthia for Felicia because 
Answer: Cynthia wanted to do a favor.

Problem: How does the sentence end?

Marcia wanted concrete countertops to replace the laminate ones in her house, because she thought the 
Answer: concrete was stylish.

Problem: How does the sentence end?

After her lips swelled up, Brian gave all the lip gloss to Christopher since 
Answer:
Christopher was insensitive to it.