Problem: How does the sentence end?

Joseph asked Justin for a simple solution to their math problem because 
Answer: Justin was a math tutor.

Problem: How does the sentence end?

Aaron ate the lasagna from the cafeteria, but Christopher didn't, because 
Answer: Aaron loves all types of Italian food.

Problem: How does the sentence end?

We decided to go to the diner rather than the restaurant on our date because the 
Answer: diner was closer.

Problem: How does the sentence end?

Robert had a bad effect on Adam, because 
Answer:
Adam was always being convinced to commit crimes.