Problem: How does the sentence end?

Leslie was able to buy new paint for his house this weekend unlike Nelson, because 
Answer: Leslie was wealthy.

Problem: How does the sentence end?

Joseph sustained an injury while working out but Craig didn't because 
Answer: Joseph didn't warm up properly.

Problem: How does the sentence end?

Angela was jealous of Victoria's academic achievements but 
Answer: Angela doesn't study enough to reach such high standards.

Problem: How does the sentence end?

Samantha is lazy and does not move around much, Amy does and that is why 
Answer:
Samantha is fat.