[Q]: How does the sentence end?

Felicia just cheated on Sarah because 

[A]: Felicia wasn't feeling happy in their current romantic relationship.


[Q]: How does the sentence end?

Aaron needed to write a paper about the British parliament. Kenneth offered to help 

[A]: Aaron because he didn't understand.


[Q]: How does the sentence end?

Dennis won a bunch of prizes for Ian at the carnival, so 

[A]:
Dennis was nice.