[Q]: How does the sentence end?

While cleaning, the wall needed an extra scrub while the carpet was clean. The 

[A]: wall was old.


[Q]: How does the sentence end?

Amy has been helping Victoria fight a nicotine addiction, because 

[A]: Amy previously succeeded in giving up tobacco.


[Q]: How does the sentence end?

Maria managed to defeat Megan in the long and terrible battle, because 

[A]:
Maria is the better fighter.