[Q]: How does the sentence end?

The website designed by Eric looked very professional but Nelson's website looked shoddy, since 

[A]: Eric had a degree in website design.


[Q]: How does the sentence end?

Neil was an awesome costume designer but Matthew was not. 

[A]: Matthew didn't win a prize at the Halloween party.


[Q]: How does the sentence end?

Neil writes a letter to Jason from abroad because 

[A]:
Jason is a very dear friend.