Problem: How does the sentence end?

It was necessary for Benjamin to write a note to remind themselves to do their homework but not for Christopher because 
Answer: Christopher had a brilliant  memory.

Problem: How does the sentence end?

During the surgery Jason made sure not to damage any of Adam's organs because 
Answer: Jason was a doctor.

Problem: How does the sentence end?

Because Kayla had a significant other and Sarah did not, 
Answer: Sarah had no one in her life who found her adorable.

Problem: How does the sentence end?

Natalie eagerly told Maria how she was going to go out to Hollywood to become a celebrity.  
Answer:
Maria was shocked.