Problem: How does the sentence end?

As it was dangerous to hitchhike, Sam decided to buy the car instead of the motorcycle to get to work, since the 
Answer: motorcycle was unsafe.

Problem: How does the sentence end?

I chose to wear the ribbon instead of the clip in my hair because the 
Answer: clip is uglier.

Problem: How does the sentence end?

Robert has to shop at husky size area while Jeffrey shops at slim size area, you can imagine 
Answer: Robert eats more than they need to.

Problem: How does the sentence end?

The scars of Benjamin haven't gone away, but Justin's are disappearing. 
Answer:
Justin uses a reliable scar cream.