Problem: How does the sentence end?

Joel always needs more practice than Randy for soccer games because 
OPTIONS:
- Joel talents in sports are great.
- Randy talents in sports are great.
Answer: Randy talents in sports are great.
sentence: The paper that Randy wrote was worse than the paper of Christopher, since  OPTIONS:
- Randy paper was legible.
- Christopher paper was legible.
complete: Christopher paper was legible.
Before Elena left for vacation she left Patricia a detailed plan to follow, 
OPTIONS:
- Elena needs others for things to do often.
- Patricia needs others for things to do often.
Patricia needs others for things to do often.
Input: Continue writing.

Samantha was having difficulty breathing while Felicia had none. 
OPTIONS:
- Samantha doesn't need to carry an inhaler with them.
- Felicia doesn't need to carry an inhaler with them.

Continued: Felicia doesn't need to carry an inhaler with them.
Story needs to be completed:
Brendan replaced his freshwater tank with a salt water aquarium, because the 
OPTIONS:
- freshwater tank was trendy.
- salt water aquarium was trendy.

My choice:
salt water aquarium was trendy.
Problem: How does the sentence end?

Maria used some acid to clean stains on the equipment but it didn't work because the 
OPTIONS:
- acid was too weak.
- stain was too weak.
Answer:
acid was too weak.