Problem: How does the sentence end?

Ian had a rewarding career thanks to Nick, so
OPTIONS:
- Ian was sure to show how much they appreciated it.
- Nick was sure to show how much they appreciated it.
Answer: Ian was sure to show how much they appreciated it.

Problem: How does the sentence end?

Robert bought a pet hamster for Adam because
OPTIONS:
- Robert wanted to get a great gift for Christmas.
- Adam wanted to get a great gift for Christmas.
Answer: Adam wanted to get a great gift for Christmas.

Problem: How does the sentence end?

Aaron needs help from Neil with testing the specific gravity, because
OPTIONS:
- Aaron knows nothing about specific gravity.
- Neil knows nothing about specific gravity.
Answer: Aaron knows nothing about specific gravity.

Problem: How does the sentence end?

On the camping trip he discovered a hole in his sleeping bag so he couldn't get warm due to the
OPTIONS:
- hole being damaged.
- sleeping bag being damaged.
Answer:
sleeping bag being damaged.