[Q]: How does the sentence end?

Allison tried to use an elastic band to put her hair in a ponytail, but the 
OPTIONS:
- hair was too short.
- elastic band was too short.

[A]: hair was too short.
QUES: Continue writing.

The birdcage couldn't hold another fun toy for the bird because the 

OPTIONS:
- birdcage was tiny.
- toy was tiny.
+++++++++
ANS: birdcage was tiny.
Problem: How does the sentence end?

The ability to study French came easier to Angela than Samantha because 
OPTIONS:
- Angela did not have a strong language background.
- Samantha did not have a strong language background.
Answer: Samantha did not have a strong language background.
sentence: The doctor had to cure the infection using medication instead of the treatment because the  OPTIONS:
- medication was not doing anything.
- treatment was not doing anything.
complete: treatment was not doing anything.
As a treatment for acne, I prefer cream to scrub as I find the 
OPTIONS:
- cream gentle on my skin.
- scrub gentle on my skin.
cream gentle on my skin.
Problem: Continue the following story.

Paul set up the microscope and the hand lens for students to view the microorganisms, but the 
OPTIONS:
- lens wasn't powerful enough.
- microscope wasn't powerful enough.
Here's how I want to continue it:
lens wasn't powerful enough.