[Q]: How does the sentence end?

The cat cannot walk through the hole with the collar on his neck. The
OPTIONS:
- hole is narrow.
- collar is narrow.

[A]: hole is narrow.

QUES: Continue writing.

Joel wants to learn how to calculate asset impairment so he asks Derrick for help, because

OPTIONS:
- Joel doesn't know how to do it.
- Derrick doesn't know how to do it.
+++++++++
ANS: Joel doesn't know how to do it.

Problem: How does the sentence end?

The friends of Elena are mean and nasty, while Amy has nice friends.
OPTIONS:
- Elena is very happy.
- Amy is very happy.
Answer: Amy is very happy.

sentence: The expensive mandolin would not fit inside the case because the OPTIONS:
- case was too big.
- mandolin was too big.
complete: mandolin was too big.

William loved the music that Adam was listening to.
OPTIONS:
- William gave him a CD by the same artist.
- Adam gave him a CD by the same artist.
Adam gave him a CD by the same artist.

Problem: Continue the following story.

Last month Elena went on vacation but not Christine because
OPTIONS:
- Elena had to work every day.
- Christine had to work every day.
Here's how I want to continue it:
Christine had to work every day.