[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?

Angela spent a long time on their book review but Betty didn't, so 

[A]: Betty scored a low grade on their assignment.


[Q]: How does the sentence end?

William asked Nick if he knows where is the nearest bus station, but 

[A]:
Nick didn't know.