[Q]: How does the sentence end?

Katrina asked Angela if they could to go out that evening, because

[A]: Katrina had no plans.

[Q]: How does the sentence end?

Felicia didn't find themselves dating as many people as Maria because

[A]: Maria was a flirty person.

[Q]: How does the sentence end?

Samantha hoped friends threw a surprise birthday party for them, but not Maria, because

[A]:
Maria hated surprises.