Problem: How does the sentence end?

The warts were still there when we treated them with oil, but disappeared when we added salt, as the 
Answer: salt was powerful as a cure.

Problem: How does the sentence end?

Matt tried to pick up the crown and put it on the table behind the car, but the 
Answer: car was in the way.

Problem: How does the sentence end?

Immigration was an important issue to Emily but not to Rebecca so 
Answer: Rebecca voted for a candidate with a nice smile and good hair.

Problem: How does the sentence end?

Because Carrie lost a bet to Cynthia over the basketball game, 
Answer:
Carrie spent hours doing the cleaning.