[Q]: How does the sentence end?

Mary was bleeding profusely from the blow Laura had landed, so 
OPTIONS:
- Mary regretted having started the fight.
- Laura regretted having started the fight.

[A]: Mary regretted having started the fight.


[Q]: How does the sentence end?

Samantha was more popular than Amy, so 
OPTIONS:
- Samantha started to worry about being invited to the party.
- Amy started to worry about being invited to the party.

[A]: Amy started to worry about being invited to the party.


[Q]: How does the sentence end?

Maria enjoyed her collections but her favorite was her dolls and her least favorite was stamps because the 
OPTIONS:
- dolls were easy to find.
- stamps were easy to find.

[A]:
dolls were easy to find.