Problem: How does the sentence end?

It was easy for Michael but not Eric to find a replacement part for the car because 
Answer: Eric did not work in the auto mall.

Problem: How does the sentence end?

The properties that my sister sells are a lot nicer than the lots that I have seen online, because the 
Answer: lots are in poor areas.

Problem: How does the sentence end?

Jason was less of a success than Neil, so 
Answer: Jason felt jealous about the differences in their talent.

Problem: How does the sentence end?

Nick is bad at writing letters, but William is great at them. This is due to 
Answer:
Nick preferring math class.