[Q]: How does the sentence end?

Rachel could act as though they cared about something they did not whereas Mary could not because 

[A]: Rachel was very duplicitous.


[Q]: How does the sentence end?

I believe Jessica is more trust worthy than Maria, from what I see 

[A]: Jessica takes their duty seriously.


[Q]: How does the sentence end?

The man tried to to use the new gas to fill the car but the 

[A]:
gas was too new.