[Q]: How does the sentence end?

Samantha was more popular than Amy, so

[A]: Samantha didn't have to worry about being invited to the party.

[Q]: How does the sentence end?

The process this year took longer than the investigation last year, because the

[A]: investigation was less involved.

[Q]: How does the sentence end?

Donald put the frame up on the wall for Adam because

[A]:
Adam was too short to reach it.