[Q]: How does the sentence end?

Benjamin was essential to the overall plan Donald was putting into action, because 

[A]: Benjamin knew how to open the safe.


[Q]: How does the sentence end?

Maria was less frantic about breaking the infant's fever than Felicia because 

[A]: Maria knew to sponge the child with lukewarm water.


[Q]: How does the sentence end?

Erin gave Kayla a scrap of meat from her plate because that was all 

[A]:
Kayla wanted.