[Q]: How does the sentence end?

Jessica preferred to freshen her breath with a mint instead of gum because the 

[A]: mint lasted longer.


[Q]: How does the sentence end?

Jennifer asked Rachel what color the trousers were trimmed with, because 

[A]: Jennifer wanted to know.


[Q]: How does the sentence end?

I needed some new clothes for work but couldn't decide on business or casual.  I went the relaxed route and got 

[A]:
casual .