[Q]: How does the sentence end?

Betty didn't want to share custody with Patricia, because
OPTIONS:
- Betty was regularly abusive to the child.
- Patricia was regularly abusive to the child.

[A]: Patricia was regularly abusive to the child.

QUES: Continue writing.

Brett was always in trouble with the law, which was frustrating to Aaron ;

OPTIONS:
- Brett obeyed the rules to the letter.
- Aaron obeyed the rules to the letter.
+++++++++
ANS: Aaron obeyed the rules to the letter.

Problem: How does the sentence end?

I lost the keys to my lock somewhere in the boxes, because the
OPTIONS:
- keys are so small.
- boxes are so small.
Answer: keys are so small.

sentence: Emily asked Mary for help with the baby after coming home because OPTIONS:
- Emily was a new mother.
- Mary was a new mother.
complete: Emily was a new mother.

The child's aquarium would not fit on the desk because the
OPTIONS:
- desk was too big.
- aquarium was too big.
aquarium was too big.

Problem: Continue the following story.

Roberta liked to read doorstopper novels. Unfortunately she couldn't fit her book into her bag because the
OPTIONS:
- book was too tiny.
- bag was too tiny.
Here's how I want to continue it:
bag was too tiny.