[Q]: How does the sentence end?

Mary was hot on the tail of the spy, who they thought was Samantha. 

[A]: Mary would not let them escape.


[Q]: How does the sentence end?

Brett was able to act in a more proper way during social occasions than Joseph because 

[A]: Brett was familiar with the rules of etiquette.


[Q]: How does the sentence end?

The man chose to buy the roses instead of the carnations because the 

[A]:
roses were more beautiful.