[Q]: How does the sentence end?

Elena asked Erin if she could borrow her deodorant, because 

[A]: Elena had forgotten to bring some.


[Q]: How does the sentence end?

Craig really loves to clean all the time but Derrick does not because 

[A]: Derrick is very untidy.


[Q]: How does the sentence end?

Staying trim was not important to Brian , but was essential to Brett , so 

[A]:
Brian never watched his calories.