Problem: How does the sentence end?

My kids enjoyed the pool a lot better than the ocean because the
OPTIONS:
- pool was cleaner.
- ocean was cleaner.
Answer: pool was cleaner.

Problem: How does the sentence end?

Nick held Samuel's horse while they conditioned it, because
OPTIONS:
- Nick was better with the cleaning.
- Samuel was better with the cleaning.
Answer: Samuel was better with the cleaning.

Problem: How does the sentence end?

I tried to fit the paper under the door, but it wouldn't go because the
OPTIONS:
- paper was too thick.
- door was too thick.
Answer: paper was too thick.

Problem: How does the sentence end?

My father tried to drive the trailer into the garage but he couldn't, because the
OPTIONS:
- trailer was too short.
- garage was too short.
Answer:
garage was too short.