[Q]: How does the sentence end?

Jason wants to become a pilot so he asks his tutor Benjamin for extra hours, because 

[A]: Jason is not ready.


[Q]: How does the sentence end?

I was listening to some music while swimming with my phone and headphone but the headphone later stopped working. The 

[A]: phone is waterproof.


[Q]: How does the sentence end?

Jason but not Jeffrey went to the animal shelter to adopt a cat because 

[A]:
Jeffrey hates cats.