Problem: There was no money in the safe, and plenty in the lock box, because the 
OPTIONS:
- safe had been secured.
- lock box had been secured.

My choice: lock box had been secured.
[Q]: How does the sentence end?

Aaron was always committing all sorts of crimes but Hunter was law abiding. 
OPTIONS:
- Aaron rarely need the services of a lawyer.
- Hunter rarely need the services of a lawyer.

[A]: Hunter rarely need the services of a lawyer.
QUES: Continue writing.

Natalie provided ground control for Samantha when they were in space, because 

OPTIONS:
- Natalie had all the relevant information.
- Samantha had all the relevant information.
+++++++++
ANS: Natalie had all the relevant information.
Problem: How does the sentence end?

The language course was very difficult. Nick enjoyed it anyway but Aaron did not as 
OPTIONS:
- Nick was very academic.
- Aaron was very academic.
Answer: Nick was very academic.
sentence: Justin had heard that stir fry food was a great way to eat more vegetables, which Kevin struggled with.  OPTIONS:
- Justin found a recipe and thought it sounded delicious.
- Kevin found a recipe and thought it sounded delicious.
complete: Justin found a recipe and thought it sounded delicious.
Input: Continue writing.

Christopher was able to do a backward roll but Eric didn't dare try, because 
OPTIONS:
- Christopher was less flexible.
- Eric was less flexible.

Continued:
Eric was less flexible.