[Q]: How does the sentence end?

Benjamin stuck close to Donald at the party, since 

[A]: Benjamin did not know any people there.


[Q]: How does the sentence end?

Leslie had to ask Nick for help with their housewarming party because 

[A]: Nick had definitely hosted one before.


[Q]: How does the sentence end?

Betty likes Pop or Rock music but Victoria likes classical as 

[A]:
Betty likes the fast tempo.