[Q]: How does the sentence end?

I took the prescribed medicine instead of natural medicine because the 

[A]: natural medicine cannot treat my allergies per the doctor.


[Q]: How does the sentence end?

Laura read a children's book to their child every night before bed but Amy didn't. 

[A]: Laura was told their child was very advanced at school.


[Q]: How does the sentence end?

The elderly people at the nursing home love Derrick more than Justin because 

[A]:
Derrick had plenty of practice on their relatives.