[Q]: How does the sentence end?

Kenneth was worried about his relationship with Jeffrey, so

[A]: Kenneth asked if they could talk.

[Q]: How does the sentence end?

Justin started guitar lessons yesterday, whereas Donald had been playing for ten years, so

[A]: Donald was an expert in their playing.

[Q]: How does the sentence end?

Creating a website was easier for Christopher than Aaron because

[A]:
Aaron didn't know how to use computers.