Problem: How does the sentence end?

Brett looked to Donald for a positive influence because
Answer: Donald had a good, successful life.

Problem: How does the sentence end?

It is hard to quit smoking tobacco but Felicia succeeded while Samantha failed as
Answer: Samantha has a weak will power.

Problem: How does the sentence end?

As he walked through the open door, he immediately saw the cake on the counter but not the puddle on the floor, because the
Answer: cake was obvious.

Problem: How does the sentence end?

Carrie went to Samantha's doctor's office so they could look at her ear, because
Answer:
Carrie was unstudied in this.