Problem: How does the sentence end?

Betty put some paste on the paper while Samantha was teaching the students how,
OPTIONS:
- Betty loved teaching at the school.
- Samantha loved teaching at the school.
Answer: Samantha loved teaching at the school.

sentence: He raked lots of money by selling his coins but not so by selling CDs, it seems the OPTIONS:
- CDs were rare items.
- coins were rare items.
complete: coins were rare items.

Keeping track of his budget in a notebook became sporadic so he switched to a phone app since the
OPTIONS:
- notebook was inconsistent.
- phone was inconsistent.
notebook was inconsistent.

Input: Continue writing.

Neil didn't want to give their number to Derrick, because
OPTIONS:
- Neil always wanted to engage in a bunch of small talk.
- Derrick always wanted to engage in a bunch of small talk.

Continued: Derrick always wanted to engage in a bunch of small talk.

Story needs to be completed:
William wanted an egg for breakfast, but Kevin ate the last one, so
OPTIONS:
- William had to eat cereal.
- Kevin had to eat cereal.

My choice:
William had to eat cereal.

Problem: How does the sentence end?

Bill's new rifle he purchased for himself would not fit in his old safe, the
OPTIONS:
- safe was too narrow.
- rifle was too narrow.
Answer:
safe was too narrow.